Wireless epithets.

I'm in a café, using the café's WiFi, but I can see a list of all the signals within range, many of which are private and password protected. You can name your wireless network whatever you want. A lot of people put no effort into the name. They leave it "linksys" or they just put their first name. Some people do something more expressive, maybe promoting an artist or a cause they care about. But the list I'm seeing on my computer right now includes an offensive epithet! Somebody is imposing his ugliness on my space -- a new variation on graffiti.