I am very, very proud of the (very simple) platform that we've built there. It's a basic tool that "just works" - and just works exactly like you'd expect it to.
If I were a consumer of cloud storage, this is what I would want it to look like.
It pleases me so greatly to know that, right now, someone is doing something like this:
pg_dump -U postgres db | ssh user@rsync.net "dd of=db_dump"
zfs send tank/test@snap1 | ssh user@rsync.net zfs receive -s tank/test