Soren wrote:what are the rules about following the teams of a city you relocate to?
You're allowed to "root" assuming they aren't in the same division (conference in certain sports) or a rival, but you'll never (or should never!) feel the true gratification of their winning. In fact, your strongest feelings will be when they beat a rival of your true team. Also, you can buy a few cheap apparel items, but most/all of those teams' gear should be received for nothing via promotional giveaways or as part of special deals (e.g. I "bought" two AZ Cardinals jerseys where I received two pairs of Suns tickets for games I was going to attend anyway, and it was like I just effectively bought the tickets and received said jerseys for free.)
Edit: Also, you should pretty much only wear the apparel to games or to watch games at a bar.