I had an idea that could help improve social interaction a bit, and add more use for mail. What if there were mailboxes, or something added, that if you went and bought mail from one of the shops around the world, you could add items, or money into it, and mail it to other players, or your friends. A way to make sure people dont cheat to farm money, maybe you have to have so many badges before you can use the mail boxes. Then, when you get it, you see this colorful, raped mail, and open it up, and get your goodies. :P It would make it so you don't have to add one item at a time, then trade, and all of that stuff.