Thanks. But until I fix and add more filters I feel it's not really fully usable yet.
You mentioned sorting in your topic but I think you meant filtering? Sorting would be cool, too.
Also I'm happy to expose a few API methods if you want to display whether the server's got RTB or what players are currently on the server.
I think you don't have to worry about flooding the master server - I assume you're just making a single request to it in which case it's no heavier than someone hitting the 'Query Internet' button repeatedly. You can probs reduce the cache time if you don't want to remove it entirely.