First off I would like to thank the developers for a fantastic game. They have done an amazing job. This game swept me off my feet and I love it. The game looks and feels awsome.
Now to the suggestions:
Suggestion #1
Selling and buying stuff from other members is a problem for me. Im not shure what the correct process is in this case. I _think_ that you give a "shout out" what you have, you find each other, you start trading. Is this a correct assumption?
If so, I feel that this process is some what tedious, maybe you guys can solve this in a better way.
Suggestion #2
These kinds of sites with forums and communitys are quite popular, maybe you could implement those kinds of systems into guildwars. For example a virtual forum where people can post information about bosses or where you can tell people about updates to the game.
Now remember, I´ve only had this game for a couple of days so if these features already exists then feel free to educate me

And again, this game rocks!
Best regards
/Andreas