Dropbox - pretty handy

I've invited you all to use it - think of it as a cloud based 2G thumb drive. The web based interface means no install needed to use.  You can get it here

I typically keep my latest working copy of any animation file (and with referencing the file size is small)

side note: if you need more room and have multiple emails - each login can get you 2G more of space. The security of your data is unknown. Caveat Emptor