Beginning January 9, the annual AVN confab makes Las Vegas the center of the porniverse as the world’s flesh-peddlers gather to discuss ... digital delivery, website techniques, marketing and customer-service strategies? That could be the agenda for a hundred other industry conventions. The banality of the AVN trade-show topics underlines the mainstreaming of pornography, which is equally evident in the fact that the AVN gathering has a pop-culture aura that, say, the concrete-industry convention doesn’t. If you can’t juice your way into the Adult Products Law Open Forum, you might see if tickets are still available to the January 12 Adult Movie Awards at Mandalay Bay.