It saves you a lot of time and frustration by enabling you to run scripts directly. You copy PHP and/or HTML and/or JavaScript code into the text area. When you click 'Execute Code', it executes the code. When you get a piece of code on the Web, and want to test it, you do not have to copy it into your editor and save it to a specific location and then run it again through your browser from that specific location. No, you just use this baby. It is extremely easy to use and contains no banners or spyware.