couldn't find anything about up/download speeds or traffic limits.
Thank you for your interest! My server sits on a 100MBit network, but I guess the bandwidth is somewhat limited by TOR, so it's "unlimited". Actually, the 1GB "limit" isn't enforced for this reason either
While I will do my best to keep my server on line, I of course don't expect anyone to trust me, and I therefore suggest that other people set up similar services and let people have multiple backups at different places (maybe combined with unionfs-fuse or similar).
I of course can't compete with dropbox etc, but this should be an excellent place to back up sensitive (your encrypted bitcoin wallet?) data limited in size.