Keith Olbermann “is despised at MSNBC,” Tucker Carlson tells Mediaite.com. “He’s the most disliked person in the building by a factor of 10.” Carlson bought the Web site KeithOlbermann.com just to drive him crazier. The site redirects to Carlson’s site, DailyCaller.com, saying, “We Own You, Keith.” Carlson also owns Keith@keitholbermann.com, which he uses as a personal e-mail address. “We were confident that Keith knew so little about the Internet that he wouldn’t notice,” Carlson told Page Six. But he did, and started tweeting Thursday morning about taking legal action against Carlson for buying the domain name. Olbermann told us, “If I were Tucker Carlson, I’d pretend to be somebody else, too.” Carlson said, “I don’t have any malice toward Olbermann. I feel sorry for him. I feel sorry for him because of his various phobias. He won’t drive a car. He’s obviously a sad guy, in elastic-band jeans.”