Another good idea resource from PG: http://ycombinator.com/ideas.html http://ycombinator.com/ideas.html That serves as a helpful litmus test. Not falling some

Another good idea resource from PG: http://ycombinator.com/ideas.html http://ycombinator.com/ideas.html That serves as a helpful litmus test. Not falling somewhere onto that map doesn't invalidate your idea, but the 30 items cover a lot of ground.