bookmarked your site when tarsnap beta came out/was on HN. Skimmed it briefly bit but honestly couldn't figure out how tarsnap worked so I tagged it "toread" and left it at that. ;-P Will go back through your archives now.
yeah i gotcha. when I first heard about it I wasn't sure if it was more a security tool or a backup tool, and/or how it compared to my current S3 setup.
Tarsnap is both a security tool and a backup tool. It's a tool for secure backups; and good backups, as a risk mitigation tool, are an important part of security.