Windows Live Skydrive Now Live
I've found Skydrive useful for all sorts of things (having started out a little skeptical) from sharing (and getting hold of) my wedding photos to sharing demos, repros and PowerPoint presentations.
The good news is the storage space available to you is now 5GB (rather than 1GB in the Beta) and things are faster and more reliable than before. I wonder if they've changed that little beach-ball thing that's meant to keep you entertained while your file uploads as it didn't keep me entertained for very long... :-)
Very cool and congrats to the Skydrive team.