Originally Posted by Penance

Tap their brain. Like Tant said, read magazines and sites or try to devise your own techniques. Even if they suck and don't work...that's a GREAT opportunity to give your opponent the chance to share their knowledge with you.

If you try to do a weird ankle twist from the guard or something and it doesn't work, after the round say "Yeah, I saw your ankle open and I tried to go for something, it didn't really feel right though, what's a good way to go after that kind of opporunity?" At worst they'll say "I don't know", at best you'll learn a new technique and make better friends =)