Different AOL versions had different exploits, too. For some versions, if you sent a single IM with a font size of 9999999999999999999999999999999999999... It would lock up their whole machine and they'd soon drop offline.
my biggest sense of pride back in the day was being "unpuntable". the process was insanely simple, delete or move aol's RichText.dll file and the client defaulted to plaintext. i would also use older versions of the client (i think 2.0 and older did not support HTML).
people would try to punt me and all i'd see in the IM window are the various (and there were many) combinations of HTML tags, which i would save and use myself to manually punt others.
