“Over the course of a single day I engage in a number of different activities for which the word “reading” doesn’t seem to do justice: I scan my social networks, I check my email, I review student work, I browse articles and books related to my research, and I engage in deep sustained examination of a single text. Each of these tasks require a different frame of mind and, increasingly, different technologies. To simplify matters, I will talk about only three types of reading, each of which encompasses several of these reading-related activities: scanning, browsing and devouring.”

http://savageminds.org/2011/12/21/reading-fast-reading-slow-tools-we-use/