Not entirely sure yet. I run several entertainment-related/game sites, and I think this one would be great for dealing with fantasy games, MMORPGS, game news, role playing games (D&D site), etc. There are lots of computer/internet games out there that use "realms" in the name, so this domain could have value to one of those companies, especially one running a huge online multiplayer game (games like Everquest, Guild Wars, etc).
I've always been into these type of games, so this name is one of my favorites.
-Adam