So apparently there's a new etiquette problem facing New York's Stylish class: People have become too willing to talk about porn in public, and sometimes their offhand pornversations can be embarrassing to their friends and loved ones. These people talk about porn as though it's socially acceptable (maybe it is?) — and in a mere two days you'll be able to learn all about them in the "Thursday Styles" section of the Times. How do we know this? Because a few folks here, and several people we know elsewhere, received an unsolicited, self-promotional mass e-mail from a certain "Styles" reporter looking for sources to talk on the subject, with a near-immediate deadline of tomorrow. In a subsequent "Thursday Styles," by the way, we suspect you might learn about the new trend of reporters scooping their own work by e-mailing a good chunk of their competition about it. But that's just a hunch.