The Warcraft Hunters Union has a guide on completing the Pest Control achievement.
If you're looking for an overview of the Elemental Shaman spec, the WTFSpaghetti blog has build and gear recommendations as well as spell rotations.
The new Paladin blog, Pink Raid Frames has a FAQ-in-progress for Holy Paladins which so far covers build, glyphs and mana management.
The Scourge, a Death Knight focused blog, features an interview with a different DK player every week. This week they talk to Mundien of Spirestone who is in the Navy and has limited play time.
The Holy Dueg! Priest blog has posted a pre-Naxx Priest gear guide. You can also check out WoW Insider's pre-Naxx Holy Priest gear guide for another take on the same subject.
