So register, take a look around, poke and prod at everything. You can report bugs here or in the support forum as its own thread. Both are fine.
Also, since we're in the early stages of the forum's life cycle, there isn't a set rulebook yet. That'll be added in later, so for now I suggest that you use your best judgement when creating a thread. I haven't tested out these cool ban powers yet, but I'd be willing to give it a try if bad shit goes down.
Edit: signatures are currently disabled, but will soon be activated and moved to the familiar text-only, dropdown sigs from the old Bnet.