You should actually go to this thread
viewtopic.php?f=6&t=868 and check out the websites and descriptions of all the active guilds. Then, chat with some of their members, maybe go along as a guest on a raid just to see if that guild is a fit for YOU.
All guilds are looking for new members, so you can narrow down your search by looking where that particular guild is raiding, what their raid schedule is like, and what their current focus is. If that guild is where you want to be content/raiding wise, then you've drastically narrowed your search.
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TemerityGM Fletcher (250) Jewel Craft (234) Brewing (226) Smithing (224 + 15%) Pottery (234) Baking (246) Pure Hell (226)
Wulfgar - Lvl 52 Barbarian Warrior, LFG in PoFire!
chown -R us ./base