Maybe if people named those people their scam would be a little harder to execute next time.
Plus I think a write-up of guide lines or red flags that one should watch out for during a DD or when talking to a VC might help more than just name calling. What worked the last time: Google their names and go past page 1 (Most seem to know how to alter their search results)
That's just one sided. They can steal your ideas (because they didn't signed the relevant NDA), and you can't even name the bastards if they do?
I have zero experience in this stuff, but it looks like in this situation, one should either refuse to sign this sort of non-disparagement clause, or have them sign the relevant NDA.