This point cannot be stated strongly enough. The buttons should describe what you're doing, not merely affirm or reject what's in the text box. People are tra

This point cannot be stated strongly enough. The buttons should describe what you're doing, not merely affirm or reject what's in the text box. People are trained to hit "cancel" or "no" whenever unexpected text boxes come up, and "yes" if they're expecting it, without reading. This often leads to them doing the opposite of what they intended. Wording it as [Foo] and [Don't Foo] is a good start, but sometimes it should be worded as [Foo] and [Bar] where Bar is opposite of Foo. For example, [Quit] and [Continue], or [Leave] and [Stay]. EDIT: an example of the wrong way to do it: "Press OK to stay on the current page, or Cancel to receive 50% off!" http://failblog.org/2010/10/08/epic-fail-photos-cancel-fail/ http://failblog.org/2010/10/08/epic-fail-photos-cancel-fail/