Jay Liew

I collect interesting life experiences

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Startup Guy

Building schtuff

Full-stack web application development—jQuery, Python, Django on LAMP, Heroku, AWS, etc. Computer Science background with 10+ years experience crafting code. I'm passionate about about delighting customers with beautiful and functional products.

Business schtuff

I was employee #4 at Double Robotics, where I did sales, customer development, marketing, BD, trade shows (incl. CES, ISTE), PR, technical support, industry analyst relations—for 2 years while headcount grew to 23. I love running experiments to find repeatable and scalable business models—finding product/market fit!

Other schtuff

I <3 riding street bikes, shootin' the shit, playing ice hockey, hackathons, and crashing parties.


InboxQ's Django app

"Matchmaking" question tweets to the best people who can answer them based on demonstrated knowledge—all over Twitter. All Things D's launch coverage, and some screenshots)

Rapid Social Response

Auto-response for Twitter that uses natural language processing on the back-end. The name is inspired by 18 Use Cases of Social CRM. Project is now end-of-life'd, see HN discussion.

pyngram (open source)

A simple n-gram calculator in python (background story). pip install pyngram


The original CoFounder Google Docs .com. I created this list, but it's been years and still growing today via word of mouth with zero marketing effort. The initial HN post that gave it the critical network-effect jump start, that later inspired other "Google Docs for X" posts

Killer Bees & Co.

Marketplace for local computer repair. Many painful lessons learned!
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Undisclosed startup

Now defunct. Using software + crowdsourcing to disrupt the multi-billion traditional advertising agency model by automating a sliver of what they do to gain a toe-hold of the market.

HotProspect Stream

See a timeline stream / of any company's social, mobile, local, jobs, news data: stream.hotprospect.com​/airbnb.com


A place for avid readers to share nuggets of wisdom, short interesting extracts, they find from books: booktldr.com

Technical publications


The Probability That A Matrix Of Integers Is Diagonalizable



The presenters investigate the question of the probability that a randomly chosen n by n matrix over the integers is diagonalizable. Such a probability is couched in terms of a variant on "natural density." Specifically, let n and k be positive integers, A(n,k) the number of diagonalizable n by n matrices over the integers with entries in the interval [-k,k], and B(n,k) the number of n by n matrices over the integers with entries in the interval [k,k]. Then, for fixed n, the presenters consider the value of A(n,k) / B(n,k) as k goes to infinity. To this end, they examine a (more computationaly amenable) lower bound on this probability by studying the number of n by n matrices over the integers in the interval [-k,k] that have n distinct eigenvalues.


This paper is also published in The American Mathematical Monthly's June/July 2007 issue (Vol.114 #6)*. You may also view or download for free from Scribd. * Online access to MAA requires membership

The Sunjay Times





FCC Call Sign:

moc.stupid spam bots eat this!weilyaj@weil Deobfuscated (why?)





Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent

Calvin Coolidge

Here's to the crazy ones. The rebels. The troublemakers. The ones who see things differently. While some may see them as the crazy ones, we see genius. Because the people who are crazy enough to think they can change the world, are the ones who do.

Apple "Think Different" commercial

Give me a stick long enough and a pivot and I shall move the world


Entrepreneurship is about betting on yourself

Ravi Mohan, co-founder of Shasta Ventures

You can't connect the dots looking forward; you can only connect them looking backwards. So you have to trust that the dots will somehow connect in your future. You have to trust in something: your gut, destiny, life, karma, whatever. This approach has never let me down, and it has made all the difference in my life.

Steve Jobs, during a commencement speech to Stanford University grads in 2005

The world needs inventors—great ones. You can be one. If you love what you do and are willing to do what it takes, it's within your reach. And it'll be worth every minute you spend alone at night, thinking and thinking, about what it is you want to design or build. It will be worth it, I promise.

Steve Wozniak

Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has.

Margaret Mead

You gain strength, courage, and confidence by every experience in which you really stop to look fear in the face. The danger lies in refusing to face the fear, in not daring to come to grips with it. You must make yourself succeed every time. You must do the thing you think you cannot do.

Eleanor Roosevelt

You can have anything you want if you want it badly enough. You can be anything you want to be, do anything you set out to accomplish if you hold to that desire with singleness of purpose.

Abraham Lincoln

My bookshelf

Shelfari: Book reviews on your book blog

And even more quotes!

Only those who dare to fail greatly can ever achieve greatly

Robert Kennedy

Cowardice asks the question, 'Is it safe?' Expediency asks the question, 'Is it politic?' Vanity asks the question, 'Is it popular?' But, conscience asks the question, 'Is it right?' And there comes a time when one must take a position that is neither safe, nor politic, nor popular, but one must take it because one's conscience tells one that it is right.

Martin Luther King Jr.

The problem with people who have no vices is that generally you can be pretty sure they're going to have some pretty annoying virtues

Elizabeth Taylor

Illegitimis non carborundum. That's Latin for: Don't let the bastards grind you down.

Gen. Joseph Stilwell

Life is either a daring adventure or nothing.

Helen Keller

I know of no more encouraging fact than the unquestionable ability of man to elevate his life by conscious endeavor.

Henry David Thoreau

There's no substitute for hard work. If you work hard and prepare yourself, you might get beat, but you'll never lose

Nancy Lieberman-Cline

It is not the critic who counts, not the man who points out how the strong man stumbled, or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood, who strives valiantly, who errs and comes short again and again, who knows the great enthusiasms, the great devotions, and spends himself in a worthy cause, who at best knows achievement and who at the worst if he fails at least fails while daring greatly so that his place shall never be with those cold and timid souls who know neither victory nor defeat.

Theodore Roosevelt, from a speech given in Paris at the Sorbonne in 1910

You can give up, sure, but the truth is that when you give up, you have to live with that fact for the rest of your life. For me, living with having given up in tough times is a much worse fate than certain failure. If you fail, then by definition you have tried. But if you give up, you didn't.

Jason Calacanis

Other other schtuff

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