Measuring "engagement"Recent discussions about Web 2.0 measurement touched this very topic: how to measure engagement?
Google's attempt is a good start, but it doesn't tell something very important: when I use Google Reader, if I don't want to view the same posts over and over, I have to tell Google Reader to "mark it as read". This also happens automatically if I stay focused on a post for a couple of seconds. This ends up showing "% Read" of nearly 100% in most cases (see right). Of course, I don't actually "read" everything, I barely "skim" over most posts, stumbling on something I find of interest from time to time. So we face, as on most Web sites, three types of engagements (or attention): skip, skim (or scan), read (or focus).