It was cringeworthy enough when pundit-turned-blogger Arianna Huffington began talking about her cronies submitting a "blog" as if the word referred to an individual post, rather than an entire site. Now another web newbie, Steven Brill's socialite daughter, is mangling the lingo. Emily Brill ran into absurd socialgay Kristian Laliberte at Bloomingdale's menswear department last night. She summoned the fashion publicist over for a photo. "Okay Kristian, get over here. Let's blog." (Laliberte's desire to promote his label, Unruly Heir, must have trumped the embarrassment of such a hanger-on.)