#1 - Jan. 23, 2012, 5:29 p.m.
You can find out the most popular races and classes on your realm, or across all realms, or across a subset of realms that you choose (for example, PvP realms, or Oceanic realms). On realm pages, with each subset you choose, you will also get a partial list of characters so you can look them up on the Armory.
Find it here:
http://wow.realmpop.com/
Do we have a thread here that lists API apps? I'm curious to find apps I've missed. There's obviously a bunch of us here, but I don't hear much about the apps that get produced.