On top of the usual dropbox referral bonus, they are doing a special school competition...

Dropbox is a free service that lets you bring all your photos, docs, and videos anywhere. Any file you place in your Dropbox folder will automatically save to all your computers, phones and even the Dropbox website. I personally find it extremely useful for keeping my clraik programs and lists synced between computers...

Sign up here to join the "space race":
https://www.dropbox.com/spacerace?r=NTg1NTE0MDA5

(even if you have a dropbox account already, you can sign up... just click "sign in")