Canonical has just released a platform for Ubuntu computers which allows Ubuntu Computers to synch their data online.

Currently the UbuntuOne is in Beta and is Invite only. Currently it offers 2GB free plan and 10GB $10/month plan. 

So if you are using Ubuntu computers and want to sync your Ubuntu computers online, you might want to head to {ln:nw:http://ubuntuone.com 'UbuntuOne.com}. 

You can  seamlessly integrate your Ubuntu computer, sync files between multiple machines, access your files from anywhere via web interface etc.

Another such service is Dropbox, Box.net