[anandkulkarni]

If the person can't execute the idea, you're still legally bound not to disclose it yourself, which renders you legally liable. Later, you may be sued because you pursue something superficially similar and the other party believes they have grounds because you signed an NDA.

[davemel37]

I'd be fascinated to learn of one such experience. I'm not saying it cant happen, I am just saying, people demanding to or not wanting to sign NDA's over sharing just ideas revolves much more around ego than it does around practicality.