Windower is detectable kthxbai.
Some people got suspended in our LS today without admitting to use of windower. Apparently it's detectable and another 2000 accounts were suspended. According to one of those who phoned SE, they can see if you aren't in Full Screen mode.
Discuss!
EDIT: The suspention is 72hours. 3rd warning=permaban.
EDIT2: Courtesy of ½pint:
http://img508.imageshack.us/img508/8875/bansap8.png