And... Here are 3 more suggestions i just now thought of!
I believe that we should have a "Support" Section, for stuff like rip-offs, bad members, and just anything someone has an issue with.
Another suggestion i have is for a "Contests" Section. This could be in the lobby or something. Here, Members would host contests(example: "First 3 people to post get something"). This would both increase posts, and give a few users a reason to join.
Last suggestion(will likely be turned down, its not a big part of the forum)
We could have a "Recommendations" part of the forum. This could also be in the lobby. In here, we would recommend various items to other people, which could increase sales for MF.