Of all the start-ups on HN, yours is the one that I easily admire the most. No funding, no bullshit, just endless iteration on perfecting a simple thing and minting that.

It's the epitome of entrepreneurship, far more so than some 'feature' that gets funded and a quick exit.

If you ever decide to do this on a larger scale I don't doubt that you'll be very successful, it's the attitude and the time put in that matter, not so much the product.

It's one of the very few business I've seen where luck has been completely (or at least, almost completely) eradicated and the whole thing is turned in to a science.

The next big question is: Can you scale it ?

I think you can, please keep us informed of your new adventures!