When company M was raising series A, it pitched this VC, who passed. Months later, a competitor launches with identical business plan, identical website, even similar content (text and style of M's emails to customers were copied). Guess who rival CEO is? Son of the VC who passed! And of course, rival's investor is the same VC:
Again, another case of when naming names would be great, so the rest of us know who to avoid.