[md1515]

I talk to a few close friends to get some ideas, but I don't rely on their excitement to give me an indication of how worthy an idea it is. Validation comes from actually getting it done and having people pay/use it.

[mukundmohan]

If you are at the idea stage, do you actually build every one of our ideas out? Is it possible to test ideas without having to build every one of them?

[tarkeshwar]

Surely you can capture a good fraction of ideas by this. But Facebook and Twitter would get missed out here :)