I upvoted you because it's an interesting dissenting opinion, and I've always wondered about whether the upside of being open beats the downside of additional c

I upvoted you because it's an interesting dissenting opinion, and I've always wondered about whether the upside of being open beats the downside of additional competition. We also don't know whether he paid taxes on the income (I also guess not), and, most importantly, whether his blog post will bring him additional revenue. Do you have many examples where blogging about success brought about competition? Are there big barriers of entry to building what he built? It looks like you'd need at least 700 of developer hours, I wouldn't do it lightly. OTOH if I had found an easy way to beat the lottery I wouldn't blog about it :P