The most random and amazing things happened at my company Browserling in the last few weeks. Someone in India discovered that they can use WhatsApp on very cheap $20 phones (Jio Phones) via Browserling. These cheap phones can't run WhatsApp but if you go to Browserling, you can use it via He made a video (first video below), the video went viral, got reposted everywhere, and more people started making videos about it (some more links below). I started getting crazy traffic, thousands, then tens of thousands of visitors and it just kept increasing from India, all trying to use Browserling as a WhatsApp proxy tool. Indian blogs picked it up, started reposting it, too. Traffic was going insane.

Use Whatsapp on Jio Phone with 100% working method

More examples:

I couldn't handle tens of thousands of free sessions and it just kept increasing. I couldn't understand what was happening. Why was everyone trying to go to WhatsApp inside Browserling? I didn't know there was a viral video. I thought it was a DDOS attack. I noticed everyone had this weird user agent that said it was a JIO phone. I throught these attackers were fools. A classic newbie mistake not to randomize the user agent. So I quickly banned this JIO user agent with "fatal error" message. But instead of a victory, my web servers started getting DDOSed even more, these users were hitting refresh like crazy. I spent half a day identifying the attackers, found that it was all Indian IPs and blocked half of country at firewall level. All was well. I could go to sleep. But then suddenly someone messaged me and said why don't I let him use WhatsApp. Then 100 users started messaging me. Then 1000s. My Facebook was blowing up.

I was now thinking I was under the most sophisticated attack ever on a personal level. I had no clue what was going on. I started blocking all these people but I was getting messages faster than I could block them one by one. I was freaking out. I decided to delete my Facebook for my own safety. While I was looking for the delete link, I accidentally noticed a link to YouTube in one of the messages. I opened it and I instantly got it. This was no attack! I was going viral! But I still didn't know what to do and kept "fatal error" message.

Days went by and users started making videos about how to get around the "fatal error", like this one:

Jio phone me what'sapp "fatal error solved" without 100% Working

They started linking to my competitors as an alternative solution. I was thinking, hah, great, let them crash competitor websites. A few more days went by and and then it suddenly struck me! Why am I blocking these users?! This is the biggest opportunity ever! I can capture tens of millions of users. Everyone in India who uses this phone.

I had no idea how much these phones cost or how much money Indian users spent on online services. I quickly put a $1/day link for 1 day of Browserling to see if I could easily monetize it, but no one bought this subscription. Then I decreased the price to $0.50 and still no one was buying. I put a $0.10 cents sessions and still no buyers. I couldn't provide a free service to all of India, so I decided at least to do something with this traffic.

So instead of banning the entire country via firewall or a "fatal error" message I created this message and asked users to follow @browserling and tweet messages about it:

And they did! All these users started following Browserling and tweeting about it. But they still couldn't use Browserling or Whatsapp, it was just a new message in place of "fatal error". I started getting thousands of new followers and tens of thousands of tweets about Browserling:

It looked like this:

Then I got curious. Would these users tweet anything that I asked them? So I decided to troll my competitors a little bit, and asked users to tweet a popular meme Taiwan number one to them. And it worked! Suddenly Twitter was full with my troll tweets:

That was super hilarious. I was literally rolling on the floor laughing. TAIWAN NUMBER ONE! COMPETITORS NUMBER NINE!

Then something weird happened with these tweets. Some kind of weird spam protection triggered at Twitter and they started blocking tweets about Browserling. No one could tweet with a @browserling mention anymore. So I changed message to one with just a shout out to browserling and without at-handle:

Then instead of just tweeting and trolling, I asked users to start following Browserling on Facebook so I could reconnect with them and let them know when the software was up and running again. I started getting thousands of new followers:

Turns out Jio Phone users would tweet, follow, like, and do anything I tell them to get access to Browserling. Very interesting.

After having had fun with this I remembered I had many loyal blog readers from India. I messaged some of my blog followers from India and we talked about this. It turns out users in India can't easily make online USD purchases with credit or debit cards as it requires a special bank permission. That's why no one was signing up for a subscription for a $1 or 50c or 10c. I kept chatting with my friends and it turns out in India they have their own localized payment system that they use. It's hard to access from the outside.

So I teamed up with my friends Sunit and Wrishiraj from Assam, India. They've built a Linux distribution for India called SuperX and have a company called Libresoft also based in Assam that can easily accept Indian payments such as UPI, prepaid wallets, and local debit and credit cards that work only inside India.

I got to work and over last two weeks I built a "WhatsApp over Browserling for India in an old browser on a $20 Jio Phone".

First I launched a simple user registration page. I just threw together quickest possible signup page. Simple HTML+CSS+jQuery. Does the job, works well and gets things done, just the way I like it. Here's how it looks on Jio Phones that have 240x320 resolution:

As soon as I launched it, I started getting thousands of new signups:

The software wasn't ready yet so I just left a message that asked users to keep tweeting to keep the momentum going:

I worked around the clock for over a week, 20 hours a day to create a new version of Browserling that can handle hundreds of thousands of users and can run thousands of Chromes in kiosk mode on servers with terabytes of ram. I put it to the test and it worked flawlessly:

But now I was no longer getting any tweets, likes or shares, and I was losing momentum. Everyone was just using it for free. I had to do something to keep it up. So after chatting with my friends I learned people in India love lotteries. So I created a Browserling Lottery:

The lottery had a countdown timer and gave a 50% chance of winning. To speed up the lottery countdown timer and increase chances of winning, users had to tweet about Browserling and follow Browserling:

Everyone loved it and wrote me hundreds of messages that they are winning the lottery and thanked me for making Browserling. The momentum was back up! I worked for a couple more days and just launched payments yesterday:

Currently I'm running a multivariate test on various plans and prices to find which ones are the most popular. I randomly display an option to buy a daily plan, a weekly plan, or a monthly plan with a different price. Here are all the possibilities. (Only one plan is displayed to one user, so for example, someone will see 19/week, someone else 29/week, someone else 12/week, etc.)

The price is in rupees. 9 rupees is 14 cents, 19 rupees is 30 cents, 29 rupees is 45 cents, 39 rupees is 60 cents. I'm using the local Indian payment processor called Instamojo, which is Stripe for India and integrates together all possible Indian payment methods.

While I was working on Indian version, the word spread to Cameroon and Nigeria where people also use cheap phones that can't run Whatsapp or other software. I'm now setting up a few servers for Africa and targeting African countries next. If anyone wants to help spread the word in those countries, please reach out to me at (Update: Browserling for Cameroon is up!)

This is well aligned with Browserling's vision, which is "run any application on any platform in any browser." In this case I've a web version of Whatsapp running in a Chrome on Linux, used in a cheap $20 phone's browser.

I will keep you posted about what happens. Do I take over India?! Does this go further and it's a success in Africa, too?! Or does this go nowhere? Find out in the next episode of incredible events at Browserling! See you next time!

As the hacker-in-residence at Hackers/Founders (H/F), I'm super excited to announce that H/F has launched its own cryptocurrency called Hacker Token or HACK for short!

HACK is issued by HACK ​Fund​ – ​a​ ​liquid​ ​venture​ ​fund​ ​created by H/F that runs on​ ​the​ ​blockchain.​ ​HACK provides an easy and liquid way to invest in top startups in Silicon Valley and around the world that are part of H/F's Co-op startup incubator. HACK will also power the H/F community and open source ecosystem, as well as support emerging technology hubs, nonprofits and startups around the globe.

You can buy HACK right now at a 40% pre-sale discount at 1 HACK = $1 USD. Full information at Use the special promo code CATONMAT that we created for my blog readers for an additional 10% bonus!

We're also organizing a HACK webinar next week for my blog readers and everyone else who's interested. RSVP for HACK Fund webinar on Dec 6 at 11:00AM PST to learn more about HACK.

If you're in Bay Area, then also on Dec 8, we're organizing CryptoCon[0] at a brand new hacker space called Circuit Launch in Oakland. RSVP for CryptoCon[0] on Dec 8.

What is Hackers/Founders (H/F)?

Hackers/Founders is world's largest startup network, uniting 300,000+ members in 47 countries and 128 cities. The H/F Co-op startup accelerator is a tight-knit cooperative, where concierge services are provided in exchange for equity, and where founders help each other and elect each other to the program. H/F Co-op has a portfolio of 55 tech companies.

What is HACK?

HACK​ ​is​ ​a​ ​new​ ​Ethereum-based​ ​token​ ​issued​ ​by​ ​HACK​ ​Fund. It​ ​can​ ​be​ ​bought,​ ​sold​ ​and traded​ ​through​ ​online​ ​exchanges​ ​as​ ​a​ ​liquid​ ​transaction. HACK​ ​is​ ​based​ ​on​ ​the​ ​ERC223 ​protocol.​ ​ERC223​ ​solves​ ​issues​ ​with​ ​the​ ​ERC20​ ​standard while​ ​remaining​ ​backwards​ ​compatible​ ​with​ ​ERC20-compliant​ ​wallets.​ ​HACK​ ​is​ ​a​ ​tradeable digital​ ​token​ ​that​ ​can​ ​be​ ​used​ ​for​ ​participation,​ ​representation,​ ​proof​ ​of​ ​membership​ ​in​ ​H/F​ ​or any​ ​other​ ​suitable​ ​purpose.

What is HACK Fund?

HACK​ ​Fund​ ​is​ ​a​ ​liquid​ ​venture​ ​fund​ ​on​ ​the​ ​blockchain. H/F created​ ​HACK​ ​Fund​ ​to​ ​bring​ ​its​ ​successful​ ​approach​ ​to​ ​the​ ​blockchain, increasing​ ​accessibility​ ​and​ ​liquidity​ ​for​ ​investors. HACK​ ​Fund​ ​uses​ ​blockchain​ ​technology​ ​to​ ​make​ ​startup​ ​investing​ ​available​ ​to​ ​people​ ​around​ ​the world​ ​and​ ​who​ ​are​ ​at​ ​all​ ​levels​ ​of​ ​investing.

Why Liquidity Matters?

Traditional​ ​startup​ ​investors​ ​can​ ​only​ ​realize​ ​gains​ ​when​ ​a​ ​company​ ​is​ ​purchased​ ​or​ ​goes public. Liquidity​ ​events,​ ​such​ ​as​ ​acquisitions​ ​or​ ​IPOs,​ ​rarely​ ​happen​ ​in​ ​Silicon​ ​Valley,​ ​and​ ​even less​ ​so elsewhere.​ ​As​ ​a​ ​result,​ ​investors​ ​seldom​ ​profit,​ ​and​ ​have​ ​to​ ​wait​ ​approximately​ ​a decade​ ​to​ ​find​ ​out​ ​if​ ​they​ ​made​ ​a​ ​good​ ​investment​ ​decision. However,​ ​HACK​ ​Fund​ ​is​ ​liquid.​ ​Investors​ ​in​ ​HACK​ ​Fund​ ​can​ ​buy,​ ​sell​ ​and​ ​trade​ ​tokens​ ​at any time in​ ​a​ ​fund that​ ​derives​ ​value​ ​from​ ​H/F's​ ​pool​ ​of​ ​well-performing​ ​startups. 

HACK FundOpportunities

Investors​ ​can​ ​profit​ ​from​ ​startups​ ​that,​ ​up​ ​to​ ​now,​ ​would have​ ​been​ ​neglected​ ​because​ ​they​ ​are​ ​located in​ ​areas​ ​of​ ​the​ ​globe​ ​that​ ​are​ ​harder​ ​to​ ​reach due​ ​to​ ​regulations,​ ​markets,​ ​and​ ​other​ ​factors.​ ​Because​ ​blockchain​ ​technology​ ​is decentralized,​ ​capital​ ​which​ ​might​ ​have​ ​been​ ​left​ ​on​ ​the​ ​table​ ​can​ ​now​ ​be​ ​used​ ​to​ ​increase value​ ​for​ ​investors. 

HACK's value is based on the performance of H/F Co-op startups. Valuations of startups​ ​will​ ​be​ ​completed​ ​using​ ​eShares​ ​or​ ​similar platform,​ ​and​ ​audited​ ​by​ ​an​ ​independent​ ​third-party​ ​CPA at​ ​regular intervals​.

HACK​ ​Fund​ ​also​ ​offers​ ​risk​ ​diversification.​ ​Up​ ​to​ ​now,​ ​it​ ​has​ ​been​ ​nearly​ ​impossible​ ​to​ ​get exposure​ ​to​ ​a​ ​diversified​ ​portfolio​ ​of​ ​startup​ ​equity​ ​without​ ​having​ ​a​ ​great​ ​deal​ ​of​ ​wealth.

100% of returns from portfolio exits are funnelled back into HACK Fund, increasing its value for investors.

Most​ ​importantly,​ ​HACK​ ​Fund​ ​is​ ​liquid,​ ​and​ ​offers​ ​investors​ ​the​ ​ability​ ​to​ ​realize​ ​gains​ ​without having​ ​to​ ​wait​ ​a​ ​decade.

How to invest in HACK Fund?

Those who want to get involved in investing into tech startups don't need to be Silicon Valley venture capitalists. ​The​ ​cost​ ​of​ ​1​ ​HACK​ ​token​ ​is​ ​$1​ ​USD.​​ Non-US investors can buy into​ ​the​ ​fund directly through Because of regulatory laws, US investors can contact HACK Fund at for more details on how to invest.

Currently HACK is on pre-sale at 40% discount to early investors (and 10% additional discount with CATONMAT promo code). To invest you will need a ERC20-compliant​ ​ETH wallet. You can create one at If you don't know how to do it, watch this video MyEtherWallet Walkthrough. Once you have your wallet, you'll need to fund it using Ethereum or Bitcoin. If you don't know how to do it, watch this video How To Buy Tokens and Coins. Now you're ready to buy HACK! Watch this video How to buy HACK and go to to buy some!

To buy HACK using USD, you'll need to wire transfer funds to HACK Fund's bank account. Please contact for instructions on how to do that.

Note: Coinbase ETH wallets won't work as they are not ERC20-compliant.

HACK Community

For more questions about HACK, HACK Fund and H/F you can join the HACK community at Telegram at, email, and sign up for HACK newsletter.

Whitepaper and Executive Summary

Full information about HACK and HACK Fund in Hack Fund Executive Summary and Hack Fund Whitepaper.


Disclosure: I'm Hackers/Founders hacker-in-residence, I bought HACK myself, and Browserling is H/F Co-op's portfolio company.


See you next time!

You know you're doing SEO correctly when EVERY SINGLE BACKLINK contains the keywords you're targeting. No garbage anchor texts, no "click here" links, just links that will make you rank #1.

This is what SEO that I constructed and executed for my new online tools network looks like after 30 days of launching.

69 links (external and internal) to, all 69 contain keyword "string":

33 backlinks to, all 33 contain keyword "csv":

All other sites in the network have the same SEO.

Get your SEO right, outrank your competitors, and succeed. See you next time!

At Browserling we're building a network of online tools websites. Each site in the network focuses on one and only one tool category. Each tool does one and only one thing. The first four websites in the network are Online CSV Tools, which is all about working with Comma Separated Values data, Online JSON Tools, which is all about working with JSON data, Online XML Tools, which is all about working with XML documents, Online STRING Tools, which is all about working with strings.

Now we're releasing the fifth site.

The fifth site in our network is Online Random Tools. Online Random Tools is a collection of simple, free and easy to use randomization utilities. There are no ads, popups or other garbage. Just randomization utilities that work in your browser. Press button and instantly get random data.

Here's a list of all randomization tools so far:

Here are upcoming randomization tools:

  • Generate Random YAML
  • Generate Random HTML
  • Generate Random Text Files
  • Generate Random HTML Tables
  • Generate Random LaTeX
  • Generate Random Images
  • Generate Random Audio
  • Generate Random Video
  • Generate Random RegExps
  • Generate Random Ranges of Integers
  • Generate Random Prime Numbers
  • Generate Random Words
  • Generate Random Sentences
  • Generate Random HTML Colors
  • And many more!

The next few sites are onlineIMAGEtools, onlineYAMLtools, onlineTSVtools, onlinePDFtools, onlineBROWSERtools, onlineCRYPTOtools, onlineCSStools, and then 25 more.

If you like what I'm doing you can subscribe to my blog and/or follow me on twitter and/or follow browserling on twitter and/or do nothing.

See you next time!

Misc 1 Comment November 17, 2017


Who would win?
 One big curly brace or one hundred tiny semicolons?