DropBox

Anyone heard of this, basically it puts a folder on your computer which you can share with friends or just online as a backup, as soon as you drop a file into the folder it syncs with their server and even saves revisions online. Its a closed beta at the moment and you have a max of 5 Gigs for free. If you want an invite send me your email address and I will get as many out as I can.

www.getdropbox.com

Watch the video they have, it can explain better than I.