I'd been holding off submitting a post to linguistlist.org, the main announcement list for linguists, until we launched and had Google crawl the pages. However, I'm not sure how well we'll be received given that linguistlist users have just raised $6000 to update the Wikipedia articles:
http://www.linguistlist.org/donation/fund-drive2007/wikipedia/This is interesting: on the one hand, you can argue that if people are willing to fork out six grand on something that can be wrecked within days by contributors who don't know what they're talking about, perhaps they'd be more eager to transfer future resources to something like Citizendium in future. More negatively, you could also argue that they're committed to the Wikipedia model and aren't going to let the likes of us in.
Probably Citizendium will have to be pitched to the linguistics community as something to complement, rather than compete with, Wikipedia.