A network security concern I recently came across (company name removed to protect the guilty) warned public venues to be wary if any of their wireless hot spots were too near staff-only computers--even those on separate networks and networked via cable rather than wireless--because of the possibility for network intrusions on the staff computers by wireless-using criminals who would use the hot spot to gain access to any nearby staff computers, and from there, any sites with which those computers communicate.
I know networking is often done via ethernet, but not via ether!
"Hey Bill, the new Linksys phlogiston NIC I installed in my crystal ball isn't talking to my Microsoft PsychicFriends.NET router; could I borrow your ethereal traffic analyzer?"
amused