Sadly, I think the FC listings are probably your best shot overall. If a guild is fairly active in-game and has a concept of some sort, I imagine they're going to be trying to market via the FC listings, rather than rely on word-of-mouth exclusively. There's probably a few exceptions, but at that point you're probably banking on just getting lucky.Â
That being said, however, don't limit yourself just to FC's- hit the Linkshells too. A lot of them are linked directly with a guild, while others may give you the networking you need to find a guild you'd enjoy! For example, if you're looking for stuff in Gridania and adventuring, then I would strongly urge you to go have a look at ShroudLife (*points at signature*)!
Good luck on your FC hunt!
That being said, however, don't limit yourself just to FC's- hit the Linkshells too. A lot of them are linked directly with a guild, while others may give you the networking you need to find a guild you'd enjoy! For example, if you're looking for stuff in Gridania and adventuring, then I would strongly urge you to go have a look at ShroudLife (*points at signature*)!
Good luck on your FC hunt!