Battle has been kicked up a notch, as the Daily Caller has purchased www.KeithOlbermann.com. Close

You may (or may not) have noticed that there's been a bit of a feud taking place between MSNBC's Keith Olbermann and The Daily Caller, the website run by (former MSNBC-er) Tucker Carlson.

The Caller — via its Twitter account, especially — has poked fun at Olbermann with headlines such as "Keith Olbermann talks too much about himself: We watch, because we’re paid to."

Olbermann hasn't taken the taunts sitting down, responding via Twitter with "@TheDailyCaller unfortunately I don't read you because I don't have to."

Olbermann has said Carlson has a "bow tie contained brain" and named Carlson among his "worst persons in the world" on several occasions.

The Daily Caller has knocked Olbermann's "ratings decline" and so on and so on ...

But the battle has been kicked up a notch today, as The Daily Caller has purchased www.KeithOlbermann.com. The site, as you can imagine, directs readers to The Daily Caller's online offerings.

"This is just the beginning of an online public service project," Carlson told POLITICO. "We'll be rolling out more in the coming weeks and months but I'd love to get your suggestions. Email me anytime at my personal address, keith@keitholbermann.com."

We've reached out to MSNBC for comment. Will update as soon as we hear back.

UPDATE: Olbermann tells POLITICO: "I hope whoever sold it to them got cash."

ANOTHER UPDATE: Looks like this thing could drag on for a bit. Salon.com has thrown its hat into the ring: TuckerCarlson.net now re-directs readers to Salon's War Room. In a piece explaining the move, Salon's Alex Pareene (who has a history with Carlson) writes, "No matter what you think of the Countdown host, this is childish, petty, and boorish behavior for a formerly respected journalist like Carlson. And that is why we here at Salon are proud to announce our purchase of TuckerCarlson.net." (TuckerCarlson.com refers readers to DailyCaller.com)