Eye tracking studies have revealed valuable information about how people read and interact with websites. One study, Eyetrack III, published a summary of their eye tracking results for news sites.
While this is just one eye tracking study focused on a particular type of site, I think there are instructive nuggets here for any informational website.
Very useful information! This article is great because it clearly, concisely enumerates the highlights of the actual study in popular langauge practically anyone can understand. Including me, of course!>)