USA Today is out with an article detailing the experience of investors who chased performance in 2000. The two exerpts below are quite striking. The bottom line is you should invest with blinders on - don't worry about the herd because they're just lemmings anyway.

But investors who poured money into the 50 hottest-selling funds five years ago are down an average 42% since March 2000...

Investors who fled laggard funds have reason to kick themselves, too. The 50 funds that saw the most money flee in the 12 months ending March 2000 have gained an average 21.4%.