I regularly limit my calls so I'm not sure my .02 matters, but I find its exactly the same. Other girls have complained it slows down early December and doesn't pick back up until March.
I find it is insanely busy staring in December right through and goes back to normal around the middle of February... when the credit card bills start rolling in. I hate having to turn down clients, but a girl can only do so many.. uh... much.