*poking my nose in here*
Hi guys. So this is a big topic of discussion over at GoMa right now, as we're working on updating the website. The majority of people have agreed a bug tracking system would be better for us to use as opposed to the current forum setup, which is getting tangled and messy with multiple sub-forums and posts.
I looked at Trac as well, as an option for the GoMa, and then thought I'd better poke my nose over here to see if you all had been discussing this. Sure 'nough!

I noticed the same issues with Trac as Paradox just pointed out (add'l software, shell access, experience) and I am not sure if I have shell access to the GoMa server, so that would put this option in the grave before it gets started for us. However, it occurred to me that if the GoW is using a tracking program for their own bugs, the Maintainers should probably use a portion of it for their bugs, as well. It keeps everything in one central location, and cuts out the need for Writers who want their Ages reviewed to be bouncing back and forth between places.
Paradox, if Trac doesn't look so tempting, you might consider
Bugzilla. Its from Mozilla, so its open source, and it looks far easier to install than Trac appears to be. I have no problems hosting it on the GoMa site, but its totally up to you guys where you want it. I would just prefer to keep things in one location, with one copy of the tracking software, so its easier for all.