To be fair, if someone casually links to a HowTo for rsync-based snapshots, saying that he can't understand how a mirroring app can be used for setting up rolling backups is a pretense modesty.
What I meant was I don't understand how I could set up an efficient rolling backup scheme using this tool. I included the link to Mike Rubel's page because it demonstrates using hard links to share unchanged files between backups.
