Still Indie recommends Mozy for your computer file backup.  Mozy provides 2GB of free file storage and a simple desktop client that automatically backs up your files on a schedule you can customize.  

While the free plan may not be enough to back up your entire computer, it is an excellent option to automatically backup irreplacable documents and limited numbers of photos.  If you need more space, the Mozy Home plan offers unlimited space for $4.95/month.

You can sign up for Mozy at*.  Signing up through this link will provide you with an additional free 0.5 GB. 

(*Disclosure: We also receive additional free backup space for every signup through this link.)