using the mouse: did you know...?

did you know that the middle button serves the purpose of closing windows in most tabbed-document applications? (you have to click on the tab)

for example all the new browsers: IE7, Firefox, Flock, Opera, etc, implement this; but also Visual Studio, Some Notepad replacements, MSN Messenger, etc, most of the tabbed-documents applications implement this funcionality

also, on browsers, "middle clicking" on a link opens the link on a new tab