There aren't a lot of anime-centric peeing forums on the Internet. Especially not a lot that aren't vile hives of scum and villainy and attention whoring and poor mental states and disrespect and spying and iron-fisted control and story-stealing.
Anyway, that makes it tough to find a good one. This site here, however, has potential to become a good one. However, it's flawed up the butt. First off, and I've mentioned this elsewhere, but the actual boards themselves are entirely ugly. This looks like a hospital forum IN SPACE, rather than an omorashi forum ON LAND. The banner is also entirely atrocious, and I personally volunteer to fix that up, if I'm allowed. Seriously though, that ugly butt artifacting, blatant nudity, and clear photoshop has survived for how long? Jeeze.
The board structure is pretty bad, too. You have to scroll past four sections to get to the peeing stuff, which, let's be honest, is what people are here for. I think the whole "For Fun" section should be named "Off Topic", include Games and Anime (I mean, it includes music...), and be moved to the bottom of the display.
The polls section seems a bit pointless. I'd put those under off-topic as well, if anyone actually ends up using them. Maybe merge them with forum games.
For a site dedicated to anime girl desperation, the actual boards dedicated to desperation are few in number and lacking defintion. Sexual discussion has only one board explicitly for desperation, and three for others/nonspecified. That seems a bit imbalanced. I'd rename "Random Fetishes" into "Other Fetishes", stick Lolicon into there as a sub-board if possible, then move Female Desperation to its own, new category. Then, under the new Desperation category, add in more specific things, like diapers, personal experiences, sightings in media, male desperation, etc. Why try to fit EVERYTHING desperation in one board, when, for crying out loud, we have FIVE different roleplaying boards? Don't be afraid to branch out a bit.
Picture posting can probably be eliminated, with its boards moved elsewhere. Goofy pic posting should obviously go under off-topic, downloads can go under a Desperation category, along with Dubious Charms. Also, I have to question, as an artist... where do I post my art? There really should be an art section for artists to post pictures. So far that seems to be Download's job, but who would expect art to go there?
For the Role Play category, well... I'm not too familiar with the whole thing. Just seems like a lot of sub-boards when there could be less.
Fiction could probably be split. Wetting fiction under the Desperation Category, and maybe an off-topic fiction in the off-topic category.
All in all, we just need to focus on our main appeal first. People come here to get off, and share how they get off with others. The off-topic stuff is needed for a better community, but will only appeal to those who've already become regulars. "Came for the porn, stayed for the people" should be the kind of members we aim for.
As for getting people here, or bringing them back, you could do some subtle advertising. Post links to stories written here on other forums, or tumblr, or something. Upload some related content to youtube, and throw the site's name in the description. The site needs to do all it can to bait people here for their 'bating. Community will come after they cum.