Need an easy way to share your screen with someone, but don’t want to pay an arm and a leg and are too lazy to setup a VNC session over an ssh tunnel? Check out screenleap, it’s simple and you get 2 hours a day of screen sharing for free. You don’t even have to sign up for an account to try it.
It appears to only need java enabled on the browser of the sharing computer, and the viewing computers just need a browser. That’s great when trying to share your screen with people in a restricted environment.