I've been seeing an ad-hoc unsecured wireless connection around school here called "US Airways Free WiFi". After reading
this I'm thinking it may be that someone around here has a "viral SSID" infection :o I bet that if I had connected I would have seen some shared folders appear in "my network places".
Actually I think using the word "infection" is overblowing it. It's just similar to email spammers luring people to revealing their private information.