It's a whack-a-mole, media style: Fox News said today it had found the "mole" who has been writing insider columns for Gawker. (Like this one about a Romney-Hannity interview.) But the mole has since posted a note on Gawker contradicting the claim. "If Fox has smoked me out, it's news to me," he/she writes. "I'm still here." Earlier, a network spokesperson told Mediaite that it had discovered the identity of the mole within 24 hours of the first column and was "exploring legal action." Fox later clarified that it had yet to confront the person: "We know who it is."