Well first there’s me, Erin!
I created the blog earlier last year with a friend. The majority of posts are by me, as well as all responses to asks and requests. Then there’s another user who jumped on board a few months ago and he posts as well - probablyadragon. He’s a great help!
I may be looking for more help soon as Gamermusic has grown pretty rapidly. If you’re interested then stay tuned!