Is it making money? If not think about monetizing it.
If it is making you money, then see how you can use that money to get more users and more revenue.
It looks like a really cool site. Would it be useful if you could scan in the UPC of your games with a smart phone?
Are they active users? I have a site with 2000 users but only 3 active users :-(
I guess a lot of people signed up but didn't stick around. If all our your users are active then maybe you've really got something there.