DeadlineHollywoodDaily reports Arianna Huffington may be being kept off NBC News and MSNBC shows as she promotes her new book Right Is Wrong: How The Lunatic Fringe Hijacked America, Shredded The Constitution, And Made Us All Less Safe.

"...one insider says she was booked on Keith Olberman [sic] and Morning Joe to talk about her tome — and then unbooked. 'These are shows that call her regularly to come on. And then the word came from on high that she had to be cancelled.' Arianna's accolytes are pointing the finger at Tim Russert, well known to be ridiculously thin-skinned, for blackballing her internally at NBC and not permitting her on any of the NBC network or cable outlets.

The site also claims, Huffington is "booked all over CNN, ABC, and CBS (but not Fox News Channel because she chose not to go on there)."

• Related: GalleyCat and FishbowlLA attend a weekend book party at Huffington's estate, but not for her new tome...