Wow, our wiki has almost 2000 articles in it! I thought I'd give a shout-out to some of the people who made their first contributions in the last week:
BrokenKat, zhouz, Tanliel, Brenmad, Onyxvale, JaxUnderfoot, Arkherius, Dairycowsrus, Bolwyn, Pootzer, EmilyFalconflare. sxd, ubergnosh, NinjaxBlade, Malorie, Maerj, ThyTrinity, necessity, and BobbyFlameheart.
If you want to contribute there's still plenty to do! We have 658 quests (which means we're missing a few) and 241 Collections. We're trying to fill in Collection Rewards and document Minigames. We'd love your screenshots and walkthroughs! If you don't want to muck with the wiki stop by our forums or IRC and someone will be happy to help you.