Dull Is In

20TH CENTURY RELICS What use are postcards in an age of e-mail and cheap long-distance calls? Almost none. Which may be why they're enjoying a moment of higher hipness. Barneys' New York City flagship store opens two new floors this month, with dressing rooms covered in cards from highway rest stops. And Phaidon has just released Boring Postcards, a coffee-table book of British cards featuring roads, old malls and unremarkable views. Groovy, baby.