PageSix.com employed 18 editorial and support staffers? That’s a lot of people, given what that site does. Or did, I should say. Nikki Finke is reporting that the 24/7 operation is shutting down, more or less because PageSix.com can’t compete with TMZ.com. The print edition in the New York Post as well as its web page will continue, but that’s all she wrote for most of the 18.