[Antivirus]

Certainly what you're looking to do can be done, it would require custom code (I'm sure you already knew this). I imagine the city preference could easily be stored in an added column to the user table, and the content on each city page could certainly be variable as well as static. If you're looking for someone to code it, I suggest posting it in the Services Requests forum, but if you're going to try and do it yourself after reading some of the articles here, post your code you're having trouble with here and I'll see if I can help out.