Suggestion: Ability to organize/group contacts.

I tried looking, but I didn't see any way to organize my list of contacts. It would be nice to have customizable folders/headings (ATFs, Need to see, FBSM, Retired, Friends, [City Name], etc.) that we can group our contacts into, instead of just one big list. My list keeps growing and it's starting to get a little cluttered.

Ideally I'd like to be able to create the groups and add individual contacts into multiple groups if desired.

What do you guys think?

good idea I would also like to be search my inbox for key words like:austin, then every message with the word austin would pop up.