Drop.io is no more. Facebook has bought them and they're ending the service! This is so horrible I don't know what to say.
http://blog.drop.io/2010/10/29/an-important-update-on-the-future-of-drop-io/

Google disappeared from the 2010 internal social software magic quadrant?!? anyways, i'm totally waiting for people to build stuff with etherpad functionality, and for Wave-in-a-box to be released..
http://www.readwriteweb.com/enterprise/2010/10/gartner-magic-quadrant-2010-fo.php