Did you hear the story claiming that Sarah Palin didn’t know Africa was a continent? Turns out it was a hoax:

It was among the juicier post-election recriminations: Fox News Channel quoted an unnamed McCain campaign figure as saying that Sarah Palin did not know that Africa was a continent.

Who would say such a thing? On Monday the answer popped up on a blog and popped out of the mouth of David Shuster, an MSNBC anchor. “Turns out it was Martin Eisenstadt, a McCain policy adviser, who has come forward today to identify himself as the source of the leaks,” Mr. Shuster said.

Trouble is, Martin Eisenstadt doesn’t exist. His blog does, but it’s a put-on. The think tank where he is a senior fellow - the Harding Institute for Freedom and Democracy - is just a Web site. The TV clips of him on YouTube are fakes.

And the claim of credit for the Africa anecdote is just the latest ruse by Eisenstadt, who turns out to be a very elaborate hoax that has been going on for months. MSNBC, which quickly corrected the mistake, has plenty of company in being taken in by an Eisenstadt hoax, including The New Republic and The Los Angeles Times.

Given the nature of our media, a lot more people heard the lie than will ever hear that the lie was a lie.

We just elected a president who doesn’t seem to know how many states are in the country, but for some reason, that fact received much less attention than this hoax.

A cynic might conclude that the media has a political agenda.

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Update & Clarification: The hoax appears to be “Eisenstadt” claiming credit for the Palin leak. Apparently he is not the leaker; assuming the leaker exists, it’s someone whose identity is still not known.

So what do we know? That an unnamed person apparently told a reporter that Palin didn’t know Africa was a continent. We don’t know exact Palin quote that led to the anonymous allegation, so we can’t evaluate the context or whether Palin’s words were misinterpreted or deliberately mischaracterized.

We also know that this anonymous report got a lot more media coverage than a gaffe captured on videotape in which Barack Obama seems not to know the number of states in our country.

The details surrounding this hoax and the original report are fuzzy, whereas Obama’s goof has incontrovertible proof.

While I misinterpreted the original scope of this hoax—mea culpa—it still serves as yet another case in which the media ignores undeniable evidence of an Obama gaffe while piling on Palin for an infraction that’s anonymously sourced and of which no recording exists.