looks cool if i were to be really really critical i would probably change a few things to suit my tastes such as the top nav bar / header graphic i would shrink the header graphic down vertically so you can see part of the forum when your at the top of the screen and also make it the same width as the forum part. currently it is not as wide. I would drop the banner to the online games as it is very big. i think ads are ok but in moderation. dont put "users currently browsing" at the top in an easily viewable place unless every forum has at least 2-4 people in it at most times. its currently sort of saying "hi your the only person who thinks this forum is any good" screams "dont post" to me where you should encourage posting as much as possible. as i say though this is being very critical. as it stands you have a nice looking forum and it looks ike it is attracting a few people too. PM me if you need any help with getting forum postings
Domain: I love it. Make sure its related to the topic. Design: The design is clean. It's not dirty. I just don't like the header much. Speed: Opened smoothly on my dialup connection. Not slow. OVERALL: No major problems. So far, so good.