Rewind — Instant replay for your Mac

This is brilliant. "Rewind efficiently and continuously records your Mac's screen so at any moment you can rewind to see an "instant replay" movie of the last 60 seconds of what was shown on screen." For all those what-the-heck-did-I-just-do moments. Cool UI too!

I'm definitely interested in giving this a try -- but there is a warning from Google the site is unsafe.