The Armory was updated with achievement and statistic tracking last week to accompany the new game features introducted in patch 3.0.2, along with tools to compare your achievements and stats to other players on your realm. There was a lot of concern over someone the things displayed out in the open for all to see such as the Wealth stat. How much gold you've had, how much you have, things like that. Players felt it made them into targets of sorts, figuring hackers, scammers and phishing sites would focus fire a little more. Heck, some people were just plain uncomfortable with other players seeing their gold stores.
It looks like Blizzard actually agrees in this case. If they don't agree, at least they were feeling a little sympathy and wanted to calm some nerves. The Wealth category has been removed completely, and while you can still check up on other achievements and stats, you don't get a free look into someone's money bags anymore. I don't know that how much gold you have on display actually had an effect on who scammers target or not, but it's not like it was important information anyway and you might as well be more safe than sorry. Some stats are fun to see and compare, but I don't know that gold is one of those stats.