One of my neighbor put their WEP for the name, probably didn't know what they were doing. I saw it and said "wtf?" I tried it one day when I was bored and sure enough I connected. I told them and they told me "yeah I put that there so when I forget it I can get it easy, cos it shows up as ****'s in the security section" I laughed, and explained why it was kind of pointless. They go "oh rly?"
another is "securenet" and there's no encryption on it go figure.