Computer help forum: Online PC Data Storage?

http://www.adrive.com/ - The basic personal plan offers 50 GB of free online storage. For a monthly fee, you can have up to 10 TB and many additional features. One thing I especially like is being able to use either their downloadable desktop application or simply logging into my account from any computer and getting to my files. ADrive is compatible with all major operating systems - not just Windows.

Although there's not much activity there, you might try asking in their forum. For free plan users, the forum is the only way to ask questions, as far as I know. If you get a paid account, you have access to their support staff.

While searching in the past, I came across a few interesting entries, but note, I haven't actually tried any of these. Crashplan has a few interesting choices. Unlimited cloud backup is something like $3 / month, but for free they offer, well, not cloud backup, but offsite backup over the internet. The idea is, you have multiple computers at different locations, perhaps between you and friends and family, and they'll back up your computer to someone else's for free. Not as reliable as real enterprise level cloud storage, but simple turn-key off-site backup. Also, their free stuff might be ad based. A number of services offer unlimited size backups in the $3 to $6 per month range.

Also, beecloud, backify, and others (resellers of livedrive?) were recently offering free 512GB of free cloud storage, but it seems that, perhaps not surprisingly, the offers have vanished and/or the companies have gone out of business.

Again, I haven't actually tried any of these.