How much stake (equity) is an idea worth?

It depends on the quality of the idea. I’m a firm believer in Derek Sivers‘ calculus, which goes like this:

AWFUL IDEA = -$1
WEAK IDEA = $1
SO-SO IDEA = $5
GOOD IDEA = $10
GREAT IDEA = $15
BRILLIANT IDEA = $20

The real value, of course (as other answers here have noted), comes from executing on the idea. And to see how that calculation works, check out Derek’s classic, seminal article on the subject:

http://sivers.org/multiply

*original post can be found on Quora @ : http://www.quora.com/David-S-Rose/answers *