Have you ever wondered how people record their computer screens on YouTube or other video sites? Now you can do it yourself because of Screenr. It lets you choose the size of the screen to record and gives you up to 5 mins of recording time. Not only that it lets you immediately share it on twitter. All using Java it has a simple UI (User Interface) that’s really easy to use. The good thing about it is that’s its 100% free and you don’t have to download it. Ever. Plus it works on Mac’s and PC’s and it plays on anywhere on the web, even on your Iphone. You can also publish the video on their site. Enjoy!