'WOMEN ARE equals now. They can fend for themselves. To offer a perfectly healthy woman a seat simply because she is a woman, however well-intentioned, is creepy. At best, she'll think you're from another country; at worst she'll feel old, or overweight enough to be perceived as pregnant." And that is a lesson in modern manners, according to the new issue of GQ (with Clive Owen on the cover). Glenn O'Brien and other GQ scribes weigh in on e-mails, cellphones, gym etiquette, dressing for travel, how to handle chatty seatmates, sleeping with your friend's ex, online dating, wedding gifts and...