Thank you for the post. We have been thinking about this problem, however, cannot find out the solution. The first idea was to put Sex Forum link in the left navigation, somewhere in the section with blog, reviews, etc...The downside - the NAV is already crowded enough to get lost easily. Do you have any suggestions?
BTW, the Forum is available on every product page (see the Forum TAB to the right from the description TAB). This is because, most of the time the forum is related to the products and therefore we anticipated people would want to start discussion when they are on this page. It also available on the product listing pages, however it is marked as Discussion - don't ask me why
Still, if you have ideas please share.