I've been working on golfcourse.wiki on and off for like five years. It's a good website, it has users (probably, you never can tell these days), monetization is going to be much more difficult than I originally imagined. I run the thing on a shoe string (about $60/month), and it shows, plenty of 502 Errors when the App Engine server has to restart. It's hard to be cheap, have tons of data loading, and also be polished.

Still... Build something! Maybe it works, maybe it doesn't. I'm just trying to leave the world better than I found it.