um, did a bit more looking and perhaps it is not a spammer but something to do with finding out of someone is online for instant messaging, presumably AIM. You type in a particular URL which includes 'big.oscar.aol.com' and press enter and if the person is online you get the running man... I did and got a running man, but I hadn't identified any individual. I then checked with Messenger to see if a mate might have 'paged' me, and he is online,so might have, but he doesn't use AOL. and nor do I, so.... I dunno......mystery.
Oh well...