I was reading the Se7en Samurai blog today and found an interesting post about gold sellers. Stormgaard went to a site advertised by one of those delightful spammers in Ironforge and discovered an open letter to their customers describing how they were currently conducting business and why they changed their methods.
It seems that the changes that Blizzard has made to the mail system has forced the gold sellers to change their tactics. They can no longer simply send gold through the in-game mail system because of the hour delay and the new "anti-transaction system". Face to face trades are out of the question for this particular company due to the time difference between their customers and their country.
Everybody now: awwwwwww!