How is this relevant?

The Associated Press thinks this is big news:

Hillary Rodham Clinton was in the White House on at least seven days when her husband had sexual encounters with Monica Lewinsky, according to the first lady's calendars released Wednesday.

(Via Memeorandum.) Carol Platt Liebau says:

Well, after almost a week spent defending his long-time friendship with a very controversial pastor, surely no one could be happier than Barack Obama and his campaign to read stories like this, detailing Bill Clinton's assignations with Monica Lewinsky on days when his wife was actually in The White House.

Well, yeah. But I don't see how this necessarily reflects on Hillary's fitness as a would-be president in the same way as the Jeremiah Wright episode reflects on Obama. Now, if the AP could dig up something new on Hillary and "Filegate" or "Travelgate," I'd be interested.