maybe the site needs more of a balance on the 'furry' side of things than it is on the sneezing. the 'sneezes' part is in large doses here, no question; the videos and art can attest to that. but aside from a museum of cartoon and anime clips, various artwork, i can't recall too many ever talking about generally furry innuendo: the fursuits, the furcons, furry jokes, furry politics, furry webcomics, furry anything. you've got the 'sneezing' part down, but i'm afraid it's overlooked a lot because it hasn't really gained much notoriety yet. if anything else, if the blue forum was Earth, then we must be the moon hovering around it. people are likely to go there first, then come here until much after they've figured it out.
the reason why the blue forum is active and works is that it has mass appeal. this isn't the blue forum, and i'm sure you'd rather not want that to happen, but part of it's charm lies in a broad variety of people going there: either wanting to know what a sneezing fetish is, whether they have it, or ample curiosity. a lot of people made friends there and know each other so well, it's hard not to go there, spend a month, and walk out with four fresh friends. maybe you could take a few pointers from them, i guess. plus, it's even gained famous through some of it's brief drama... closest thing we've had here to that is Blinky.
not trying to slam your site, but i think there really isn't much else to suggest beyond making it feel more 'furry' to attract furries to show up and not just the sneezing crowd. you've got all the basics down for a nice little board, and the attraction of sneezing videos and art is all there. we've already seen art contests, writing contests. maybe have a fursuit contest, or someone can try out posting a youtube video of them sneezing in a fursuit. i dunno.
members will talk when they feel like they'd like to talk, but lurkers are is lurkers do. i'm fine with the site the way it is. aside from the regulars, there's no reason to complain. just remove anyone who hasn't done diddly and keep the mainstays.