Re: Why not just a Tor exit?
"Of course, professional IT staff would find it quickly, but small businesses, cafes, libraries, medium-sized hotels, etc would typically have no IT staff of their own or the ones they have are so busy they aren't going to worry about it."
Unless the firm involved has metered Internet, in which case they'll probably notice it quickly in their bills. Even if YOU don't hammer it, someone else will probably find it and hammer it.
As for using TOR, recall there's a lot of research into sniffing TOR right now. An exit node sitting in plain site like that would probably be noticed by LEOs, MITM'd, and logged to track users back to their entry points and so on.