Nice tip from Macworld to automatically backup versions of applications. I’m not sure I agree with the reasoning for doing it though. If a developer removes or changes a feature that I’m not happy with, I’m more likely to find a different app than to constantly skip updates or hassle with reinstalling an old version. It’s way too easy to choose “Download All Free Updates” than it is to selectively update individual apps.
Philosophy aside, it’s a nice Automator workflow.