Well Ben. There are a number of guilds on this website alone that meet your needs. Have a read of some of the forum entries to get a "feel" for the people. We all like a laugh, and each guild has its own merits.
My guild (English Pirates) has around 200 members, but I think quite a few of them have given up on the game (I really must tidy up the members list lol). We have a core of around 20 members who like nothing better than to team up and go kick some enemy butt. I may be English, but we have quite a few US members.
Take a look at our forum -
www.englishpiratesguild.com
League has a sticky in this forum
http://www.piratesonlineforums.com/f...ead.php?t=5342 that may be of interest to you too. I don't think it is pushed enough for people looking for guilds. (You're welcome League
)