Well, it's definitely not a feature we know about

One thing to test for is that the backspace(+ other key) combo you're hitting may be telling AOL (or your IE) to go to the previous page; a navigation shortcut, in other words. I know that on the Mac, if you're filling out a form and hit the shift+backspace key combo to return your cursor to the start of a line of text, what actually happens is that the previous page loads from your browser's history. I do it constantly... followed by a V8 forehead slap.