Ok, dont ask me how this can be useful... maybe a prank on a mate or w/e
I found this out when i ws bored...
1) Open chat log and type a whole line of any letter/number.
2) Hold your backspace button to start cleaaring what you just typed, whilst holding your backspace button down... highlight (useing your mouse, Duhh) what you are backspaceing.
3) Bammmmm CRITICAL ERROR!!!!
lol... well there u go