A few readers contacted me earlier this week to express their strong displeasure over our use of the phrase "Bush's Brain" in a front-page headline Tuesday reporting the resignation of longtime adviser Karl Rove.

The issue doesn't appear to be whether the headline "'Bush's brain' announces resignation" is factually correct: Rove has been referred to as such numerous times over the years. In fact, it was even used in the title of the book "Bush's Brain: How Karl Rove Made George W. Bush Presidential" published in 2004.

Rather, the issue appeared to be whether it was appropriate to use the term in the context of a front-page news story. While "Bush's brain" may be a term of endearment for Rove, I would think most would agree it doesn't reflect particularly well on the current president.