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    The large banner ads are kind of overwhelming when the page opens. You might want to consider using two 468*60 ad one above the other.
What is the site about? There's no information about it at all. 

 If it's just a general forum, let people know right off the bat, don't hit them in the face with ads. 
 
 What is the news section going to develop into? It's currently a restricted zone. 
 
 It's really nice that you have XOOPS as the sponsor for each of your forums, but you'd probably be better off using some type of relevant, text-based affiliate ads. Look into commission junction or something similar.
You should get a livelier logo for your site. Something catchier. Here's a couple of sites for making great-looking logos. 
http://cooltext.com/Default.aspxhttp://www.xara.com/referrer/headmaker_trial.aspBoth of them are free; the second one is part of a sales pitch, but you can keep any logo you make.
I LIKE what you did with Liaise. Really creative. Maybe you should change the name of the link to something to reflect it.
Looking forward to seeing the end product,
gestroud