During prime time, if you happen to be learning ranked pvp, suck at it, or have just plain bad luck, as soon as you drop below 1000 rating queues no longer pop. This is a real problem with ranked. It causes players to be overly cautious and not queue up again if they lose one match in a day, come up against a hard team, or have network issues.
It also makes it impossible to climb back up the ranks during a given season. Too bad if you have gotten better, or had bad luck and dropped down to 999.
I am assuming there are different brackets for the queue, and that once people drop below 1000 they just don't bother queuing anymore?