I was able to find a few still working - in England: leamington spa, birmingham, Bradford (appears to be covered in cobweb!) Carlisle, etc.
EDIT: I'm going to be spending hours on this today!
EDIT: I'm going to be spending hours on this today!
Edit: I take that back. I assumed "open" meant a default or insecure password
It's a completely fucked situation we're in, with the CFAA law. It allows the feds to charge anyone they like, cause they used a network.
I guess we're supposed to fax the owners before we submit a TCP connection with their machines, but we'd probably run aground of fax spam laws.....