When I set up my Wi-Fi router I disabled the broadcasting of my router ID. This means that someone has to know my router ID to connect to it which doesn't protect me from uber-hackers but it does keep out the riff raff.
Well, some people have decided to use their Wi-Fi router ID to send a message to that special someone in their neighbourhood. I ran across this article at PassiveAggressiveNotes.com that has a number of examples of creative router IDs. My personal favourite is "YourDogSh***InMyYard".
I may have to reconsider disabling my router ID. Perhaps something like "RCMP Sting".