Personally, it's been no better or worse for me than other 2.0 sites I'm on: GoodReads, FaceBook, Last.fm, Flixster, etc., etc. -- although I know Linked-In is supposed to be more, er "professional," I think, a notch or two above such pedestrian sites.
-B.
shag wrote:
"someone invited me to linked in. i said i would love to but didn't have an account. he replied, 'sure you do.' and lo, i do."