Free Dropbox alternatives

Hello there again...

I've been wondering if there's anything as awesome as Dropbox lying around. It is perfectly integrated with Nautilus, everything I copy into/delete from my local Dropbox folder is synchronized on the clouds.

Problem: 2GB-limited free account.

Free suggestions?

www.copy.com
one.ubuntu.com

Thanks, Ryanvade, www.copy.com seems great, I have just signed up to it.

There's also BtSync if you have another machine lying around that you can keep on.

Syncthing is an OS (open source) alternative for BtSync.
https://syncthing.net/

You can try Kim Dotcom's site
www.mega.nz