Comment Re:Did no one read the fine summary? (Score 1) 305
Tarsnap is really designed as a backup service rather than a synchronization service: While it is very good at recognizing duplicate data and only uploading new blocks when you create an archive, it has no such mechanism for making archive extraction more efficient -- I wrote it with the presumption that people would only be extracting archives after losing data. That said, I think I can see a way to implement "tarsnap -x --sync" efficiently.
But for right now, as much as I'd love to get more customers, I don't think Tarsnap really matches the submitter's requirements.