A technology which you might have heard of by the name of Windows Live Folders has a new name Windows Live SkyDrive
OK making our names rhyme might not be all that great. With the active X control installed you can just drag and drop files into your 500MB of free space, and you have a simple security model of share with no-one, everyone or people you choose.
It's still in beta, but open to US, UK, and India. Just go to http://skydrive.live.com .