LittleSnapper's beautiful vector-based annotation tools allow you to mark up your images with text, callouts, shapes, lines, arrows, blurs and highlighting. Best of all, the annotations are all non-destructive allowing you to hide and show them at a moment's notice.
Nice alternative to Skype, especially as Skype begins charging for multiple participant video chat. Communicate using 8-way Voice, 4-way Video, Instant messaging (Facebook, MySpace, MSN, Yahoo!, AIM, ICQ, Jabber, GTalk and iChat). Transfer files at any size. Remote PC Access. Share files, photos, documents, and stream music to anyone anywhere.