I've added a link to the new Warhammer guild I'm a part of, Casualties of War.
Half the bloggers I know are members already. I normally avoid guilds like plague, but this one's a bunch of people I respect and the guild is devoted to fun (rather than grinds and server domination). These are people who acknowledge that non-virtual life comes first, and we're just sharing a great hobby together.
The guild's not restricted to bloggers. So if you're interested, check it out.
Keen and Graev have also started a Warhammer guild. Theirs will probably be great too, but it has a slightly different focus than ours. If CoW doesn't suit you, take a look at that one.
I have to say, I'm excited about finally getting to game with so many folks from our little blogosphere. Hope to see you there!