Mayfair games distributed it in North America, though pretty sure that is about to or has very recently changed. My copy is rather old, back from when they first brought it here.
Favorite tactics...
Well, we usually randomize the tiles before placing the numbers, so always shoot for either monopolizing a resource that will be scarce later on or just being on the widest range of numbers possible. In 5-6 player games, make a point of 3-road blocking anyone who looks like they might be trouble later on.
Favorite thing to do later on is offer really crazy deals, like "my hand for a dev card" (not an actual one, but resources for one) or "all this stuff for a single blah". Throw so many resources at someone that it overrides that general sense of impending doom that prevents them trading with anyone close to winning.
Longest road is probably the easiest thing to lose if somebody is aggressive about breaking up your roads with their own. It's unreliable in any of our games.
