Invite others to an event

[typically come to this page after being on an event page]

Event: Radiohead @ Stubb's, Fri, July 17, 2006!

Who are you inviting? [mechanism to easily add friends from listing on right?; easy to start typing friend names or emails in, and it optionally can autocomplete for user; Allow user to type in IM names from AOLIM, YahooIM, MSNIM, GTalk, and we'll IM those users for them, with our own screenname, and invite them]
steve@hotmail.com bobbi

Say something about this event to friends:
I'll drive, split gas. Pick you up at 4?