NOT KEEN ON TEENS: Following the closure of Cosmogirl in October, Hearst Magazines has now decided to shutter Teen magazine and its Web site, teenmag.com. A spokeswoman said the winter 2008 issues will be the last, adding the title did not take subscriptions and was a newsstand-only publication (with 200,000 distributed copies each quarter) that was acquired by Hearst along with Seventeen magazine, in 2003. “We will continue to publish the annual Teen Prom issue but will focus our teen publishing efforts on the Seventeen brand,” said the spokeswoman, adding editor in chief Jane Fort will stay on to oversee the Prom issue. The magazine had a small staff and only a few employees will be affected by the closure. The spokeswoman noted that teenmag.com will be absorbed into the Hearst Teen Network of sites over the next month.