Screencast-O-Matic is an easy to use and incredibly useful web-based service that lets you record your screen or a portion of it and create screencasts online. The bast part about it, is that it lets you create screencasts directly from their website, without having to download or install any screencasting software. With this service you can upload your videos directly to YouTube once the Screencast is created. You can also download the Screencast to your computer. Screencast-O-Matic Usage: It’s not necessary to register with the ...