While I don't have any official numbers, I think it's easy to say that Rogues are the class that sees the most complaints from others. Crying about Death Knights has been en vogue recently, but we've still got years of threads calling for the complete and utter downfall of every assassin. While all of this negative press has resulted in a few nerfs that nobody was happy with, it seems that Blizzard has chosen to rise above the noise and ensure our slot at the top of both the DPS meters and PvP representation charts.
We went through a spell as the least-played class of WotLK: a level that Rogues had never even approached previously. We were largely middle-of-the-pack in PvE and PvP, with HAT exploits and Glyphed Vigor + Overkill + Mutilate combos barely sustaining us. However, Blizzard heard our cries for a resurrection, and we were reborn in patch 3.1. With the newly minted PPM Poison mechanics adding gobs of nature damage to every spec, and the redesigned Combat tree breathing life into the raiding scene, we're sitting pretty as the #1 DPS class in both Ulduar and the arena. The question that's on my mind now: "What next?"