http://www.chess.com/groups/home/1b3-nimzo-larsen-attack
Join this group - they have some great people, and great ideas. The best way to understand what you are trying to defeat is to understand what they are thinking...hope you enjoy! Who knows, you may get converted to 1. b3 in the process!
i don't know if anyone uses these forums even but i am looking for good counters to the nimzo larsen attack so i can learn how to best avoid them. i have done extensive analysis and read a lot about it. i'm just fishing for fresh ideas.