Before you read this know that we're Ebonheart Pact. It's hard to find RP guilds though so it may be worth considering us. I'll post this and leave it up to you.

http://thecultoftheoldways.freeforums.org/index.php
The Cult of the Old Ways. We aren't just some upstart RP guild. We've been going for over a year in anticipation of ESO. This is our site which has had over 25000 posts. That's almost 70 posts a day. We are small at the moment, we have only 5 real members, but we have all been here for a year and come on pretty much daily. We haven't set up in the game yet but we will in the next couple of months, I expect, as only two of us have the game at the moment but I am getting it in the next couple of weeks, another of us is getting it soon too. As for the fifth of us I am not sure when he is getting it. We have all learned to RP in the past year and we have all posted hundreds of times in the forum RPs we do so we are all competent RPers (however we aren't experts and one can always improve). We RP Dragon Cultists. Please consider us and have a look at the site.