Continuing the theme that it doesn't make sense for Intimidate to be a way to let your friends fight better against scared opponents (since they're supposed to be scared of you, not your friends)...
Maybe it should work like Dodge, which designates a target... so when you successfully Intimidate somebody, they have a -2 on all attack rolls & stuff AGAINST YOU for the next round.
....That's it! That's how I'll use it in my campaign!
Jason
Postscript: Hmm... what shall I post next...? I think next I'll complain about the new classes from the Miniatures Handbook!