thelinuxlink.net

In a recent episode the discussion came up about online backup. I think Dropbox was mentioned as well as some other options.

I have been using http://www.jungledisk.com/ It uses the amazon s3 service and they have a linux client available.
When I bought it they had a flat price, now it's either $2 or $3 per month plus the amazon storage fee which is minimal depending on the amount of space you use.

Mainly bought it for backup of pictures and cool that they have a linux client.

https://spideroak.com/ is another good one too.

There is so many in this industry.
There has been a few good articles comparing them

I think I dent'd about them awhile ago.