The Poynter Institute has run an eye-tracking study and has published their results and analysis. One of many performed, this one focusses on news sites and advertising.
What do people see when they view a news website or multimedia feature? Is it what the site's designers expect? ... Perhaps not. The Eyetrack III study literally looked through the eyes of 46 people to learn how they see online news.
Althought this site has a narrow focus in terms of types of content, I think there are some parts of it that have a general application. For example, the section on article page design has some interesting results and tips about writing for the web.
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