ScreenCastle or record screencast without special software

If you want to create a simple screencast, but do not know how or do not want to install special software, you can use ScreenCastle and do everything from your browser.
Visit the website , click on the big red button and ScreenCastle will download a small Java application with which you can control the recording. Here you can specify whether to record in full screen mode or just a specific window and record sound (subject to the microphone connected).
Immediately you will be shown links to the resulting screencast.