Close That Window

Have you ever found yourself on the internet when suddenly a full screen advertisement pops up and you can't find the X to close it?
I hate it when a web site tries to trap me with a full screen page with no visible way to close the page.
With this tip, you won't be stuck again. Simply click once on the offending page, then hold down the "Alt" key on your keyboard and press the "F4" key. This will close the window that you just clicked on.
To help you remember, just write Alt+F4 on a sticky note and stick it on your monitor.