User blog comment:Sarah Manley/New Editor Scheduled for Sitewide Release/@comment-5473581-20110901001405/@comment-1613840-20110901182038

The previous default, Courier, was a pretty old-school font, and is not really optimized for current computer displays so we are trying an update to a selection of more recent fonts. The typeface most will see, Consolas, is essentially Microsoft's replacement for Courier.