Backup and Sync Files Online – Dropbox

I have been using Dropbox for quite sometime now for small online backups and data syncing.  You can get a free account of 2GB disk space.  So if you working on projects with the laptop while traveling and when you get back home, your main computer will have the updated files.  It adds a folder just like mydocuments and files you put in the dropbox folder are automatically synced.