[iancarroll]

I use tarsnap for all my backups, but that's a service as well as a tool.

This is my daily crontab: http://pastie.org/8982530

[icebraining]

Same here. Just did a full backup of my VPS:

               Total size Compressed size
  All archives 3.7 GB     1.5 GB

Deduplication ftw.

[cperciva]

That's just showing the compression (deflate). Deduplication is why "(unique data)" line which you didn't paste will be lower.