I'm always looking to create some new niche site for passive income. I've tried various site worth estimation services to see how much existing ideas are earn, but it's really hard to trust the numbers. Many of them are opaque about their methodology. But what if we aggregated their results (a la Nate Silver)? I created MetaSiteworth to do just that, and the results give you a ballpark idea about what kind of sites make what kind of money:

Here's some of examples:

// Music sites

http://metasiteworth.com/report/anydecentmusic.com

http://metasiteworth.com/report/rapgenius.com

http://metasiteworth.com/report/pitchfork.com

http://metasiteworth.com/report/mp3skull.com

// Utilities

http://metasiteworth.com/report/converticon.com

http://metasiteworth.com/report/favicon.cc

// Reference Sites

http://metasiteworth.com/report/howjsay.com

http://metasiteworth.com/report/urbandictionary.com

// Other

http://metasiteworth.com/report/milevalue.com

http://metasiteworth.com/report/mtbs3d.com

http://metasiteworth.com/report/thottbot.com

http://metasiteworth.com/report/forbiddenplanet.com