Ask HN: What's a side project you built to make money that hasn't?
I built a Tinder-like matchmaking app where users log in with their Facebook account and the app then auto-matches users by their FB likes. I thought taking the hassle out of swiping could give my app an edge over Tinder. It was working fine for a week or so before Facebook caught up and revoked my API keys (effectively killing the app). They didn't give any reason besides some vague recommendation to review their Terms of Service. A few months later at their F8 developer conference they announced they'll be launching their own matchmaking service which will work pretty the ...
Source: ycombinator.com