This question has been asked before, but now that the site has had some time to find it's feet and the community is taking shape, we need to survey what the current thinking is.
Below is a list of all the previous suggestions I could find - please add any others I've missed and discuss in the comments.
Please note this from Robert Cartaino:
Name changes can be disruptive, but they can be done when they are demonstrably better at describing the site... but URL changes really should be, like, game-changing-we-HAVE-to-have-this better. That's what the meta discussions will decide.