From the comments here, I infer, VCs probably don't like being pitched unsolicited. Girls don't like being hit on. I have never pitched a VC, so i am basically theorizing here. The trick is not in approaching them, but approaching them in a way which does not activate their natural defense mechanism. If you come across as interesting the girls will give you attention. Its better to lower their defenses with an approach that they don't expect.
Maybe girls don't like being hit on by the wrong people, or in the wrong way. But ultimately they do want to be approached by the right guys, or they wouldn't keep on going to places like bars where one of the main selling points (unless it's a gay bar) is meeting people of the opposite sex.
