I love being able to see who all the new users are, what the popular nodes are and move stuff around easily. I love the flexibility of it, and its hackability (even though I’m no PHP guru, I’ve already hacked the webserver-auth, weblink, node and user modules without breaking anything).
So, if you’ve got a community site you’re planning, definitely consider it!! It makes starting up so much easier, since all the tools you need are right there to start. OK, so it’s still a little tough to get all configured the way you want, but it’s not impossible. It just takes a little patience, and a willingness to experiment.