When I join the game it just says "Please wait until the level loads" or something like that, but nothing occurs, it just refuses to load the map...
I've been using Snooper, and I have activated it by messaging Hosting Buddy ( /msg HostingBuddy allowsnooper), and it ain't working when I host either...

I just tested and it works fine right now.

There was a short (10-minute-ish) outage at the server caused by an evil Internet robot around the time of your post.