Nothing makes visitors want to kill you faster than forcing their browser into Kiosk mode.
The problem was with AOL users. The AOL browser, while IE based, didn't support opening pages full screen. Now if all it did was cause AOL to crash, it would have been bad enough, causing one to lose all their open pages, unsaved email drafts, open IM conversations, and losing your internet connection.
But no, it was worse than that...it cause a BSOD when viewed in the AOL browser, forcing one to have to reboot.