I've noticed we've got a lot of new people on the thread in the last couple of days. Welcome!
I just wanted to point out to everyone that there's a list of subjects already covered that's maintained in the first post. This can be a help with both selecting a new topic, as well as in guessing. There's also a list of rules and definitions in the original post. If anyone thinks of something that needs to be clarified or added, I would be happy to add it, just please let me know.
Okay, game on.