The Nielsen Norman Group - user experience researchers - recently released their latest report on how people read online. It builds on work going back as far as 1997 - about a century in internet-years. (Internet-years work like dog-years: 1 internet-year = 4 human years.)
One finding jumped out at me:
The way people read websites hasn't changed. To quote ...
People are not likely to read your content completely or linearly. They just want to pick out the information that is most pertinent to their current needs. We can design content that supports scanning by:
Using clear, noticeable headings and subheadings to break up content and label sections so that people can scan to find only what they’re most interested in
Placing information up front (in other words, “front-loading”) in the structure of our content, as well as in subheadings and links, to allow people to understand the message quickly while scanning
Employing formatting techniques like bulleted lists and bold text to allow the eye to focus on the most important information
Using plain language to keep content concise and clear
The report is here. It's well worth a read if you have a website.