Windows: We go through a lot of trouble to keep people from seeing everything we do on our computer, but free web service Snoopon.me aims to do the opposite: allow your family and friends to watch your activity to keep you productive.
There's no doubt about it, the idea is creepy, invasive and all sorts of accidental disasters waiting to happen, but it certainly is an interesting approach to productivity. Like having an accountability buddy when you're trying to lose weight or achieve any other sort of goal, Snoopon.me lets others view periodic screenshots of your computer to make sure you're actually doing your work and not slacking off.
Signup is free, and the interface allows you (or your "accountability buddy") to create a list of friends on the site for quick access to their screenshot feed. Snoopon.me takes the screenshots using a small system tray app that runs in the background, so you can always turn it off you want to pause your feed — just be prepared to explain to your buddy why you turned it off! The screenshots are also small enough that you cannot read normal sized text on the screen, so it isn't necessarily a dangerous breach of privacy — but it's still fairly easy to see whether you're reading your favourite software blog or doing actual work.
It's an unorthodox way of staying productive, and it's definitely not for everyone, but if you're having trouble staying productive and would prefer the support of someone else, it's certainly one way to keep from playing FarmVille when you should be working.