One of them was completley unprotected, having the name "Belkin Gxxx" whatever the model was. Obviously the people plugged it in and just started using it.
I connected, checked my email, did the other small things I had to do. Then I tried logging into the router, as expected, the username and password were the Belkin defaults. I left it unprotected, but changed the broadcast name to
"Belkin lock up your shit"
Two weeks later I went back and I saw it again, this time named "Belkin says thank you" with WEP encryption.