Since the goal of ArmorGames is to find and play games, you might want to take a page out of Google+'s book - specifically the circles idea. How this involves the forum is to integrate it into your game API so not only can posts be real time but link groups into games (plural, such as for clan activity or "fourth wall" roleplayers) designed for it. This could extend what forum games are, too.
For developers, this would give them additional tools if a special forum or topic is set aside for their game (perhaps easier set up moderation), special abilities that only forum software can give (special sort searches of users, thread searches to help with game support and design, in game forum).
Obviously, security and monitoring is important but I feel the extensability gained would be worth it. Also, if you integrate the forum side by side with the actual games being played you would be able to offer a new feature that would help "compete" with other sites like Kongregate without copying them.