[rotnewson]

I use tarsnap and like it but it really isn't a dropbox alternative.

If you want client side encryption with close to dropbox functionality use spideroak, if you want snapshot/dedupped/backup + encryption use tarsnap.

[pathy]

Hmm, yes you are right.

Spideroak's functionality seems closer to Dropbox. Spideroak does seem more practical to use.