During a now-infamous House Oversight and Government Reform subcommittee hearing, Harvard professor Elizabeth Warren testified that her calendar is “an open book.” Unfortunately for the professor, it is also in some cases a blank book.

Warren, adviser to President Barack Obama and Treasury Secretary Timothy Geithner on the new Consumer Financial Protection Bureau, got caught up Tuesday in a fairly testy line of questioning with the subcommittee chairman, Rep. Patrick McHenry (R-N.C.).

At one point, the chairman asked Warren to disclose dates of any mortgage settlement meetings that she had attended.

“Congressman, I believe that my calendar is an open book,” she responded. “We’ve been posting my calendar since last October, last November.”

“I can say my calendar is an open book,” she repeated driving the point home.

But when HOH clicked over to her online calendar, we couldn’t help but notice that it has been blank since March. October and November of 2010, when she testified the online calendar was first posted online, were also blank.

This week was bad in technology for McHenry as well. Warren’s supporters spent Wednesday slamming the Congressman all over his own Facebook wall and Twitter.

But his spokesman, Michael Babyak, puts it in perspective: “The only thing better than receiving over 1,000 ‘likes’ on Facebook is knowing that ‘dislike’ is not an option.”