I am sure there are other servers out there that may have more bloggers than Scarlet Crusade, but I have really been noticing the sheer amount of bloggers from SC. There is me of course, in all of my Dwarven glory.
There is also Hall of Famer Phaelia at http://www.resto4life.com/.
There is my buddy Occeleta at http://occeletaaltaholic.blogspot.com/
There is Cow tank extrordanaire Tarsus at http://stupidtank.wordpress.com/
His guildies Seri and Jov at http://snarkcraft.wordpress.com/
More of their guildies at http://oneroguesjourney.com/, http://axiomofapathy.wordpress.com/ , and http://fagcraft.blogspot.com/ (perhaps NSFW).
Not to mention there is Bre of http://warcraftpets.com/ fame.
That seems like a lot of bloggers. I imagine whatever server BBB and Ratshag are no has a bunch of them as well.