zgamer5 found a video of the GW2 panel at PAX East, which is something that clears up a lot of things about the game, and I can definitely recommend it for everyone who's interested in the game (even though it's really long ).
http://www.gamespot.com/events/paxeast2011/story.html?sid=6303935&tag=topslot;title;1
I love the 'auction house' implementation, where you're not just selling stuff, but requesting stuff as well. So you can make a request (I want to buy x amount of y at z price), and have an offer by the time you get back. :D