Alright, I shall be the first to start. I guess this year's edition is much more difficult than the last few years' ones since there had been a long period with relatively little traffic on the board due to the lock-out. I shall give my best.
Most Valuable Poster: cpfsf.
Most Improved Poster: cpfsf. He gets better each and every year.
Best New Poster (signed up in 2011): Well... I forgot who signed up this year while making a significant contribution. I might add someone later.
Best International Poster:

Nah, there's a bunch of guys I wouldn't like to miss around these parts. If Lobo posted more frequently, he had this category locked up but I can't decide between Foye, Lobo and southern wolf. These guys are quality guys and I have to leave lots of quality guys out of this, too (mainly some Spaniards and Aussies and tirion [who's Russian IIRC]).
Most Knowledgeable Poster: If we're only talking the business/financial aspect of the game, it's shrink. Hands down. Overall, I give the nod to younggunsmn. Honorable mention to horaceworthy.
Most Passionate Poster: calinks
Funniest Poster: cpfsf & johnwall2wizards
Most Cynical Poster: I don't know. Casey hardly posts these days. Nor does Disgruntled. I guess I pass on this one.
Most Missed Poster: some guys (MVP4Life, nctarheels21, GopherIt, karch, rev etc.)
Poster most likely to wake up next to Ricky: lobo
Poster most likely to go postal: cpfsf when the Germans will finally take over the board
Post of the Year: I can't recall one

Thread of the Year: see above

we should really have more awesome threads again.
Best Wolves Mod: me. har har.
Best Non-Wolves Mod: me. har-dee-har. But seriously, Schadenfreude got this one locked up until the very day he decides to retire.
Best Non-Wolves Poster: there are many awesome guys from the OTB. I guess I take Soul Patch. That guy is dreamy.