Microsoft's adCenter Analytics offers Length of Visit tracking, which "will give you an excellent clue as to
whether visitors are finding your content compelling," Carson says. The report can be found under the Visitor Loyalty tab, and displays the number of visits over the given test time, the length of
each visit in terms of seconds, and the percentage overall.
For example, one company's blog might show 1,366 visitors (of 1,733 in all) that stayed between 0-10 seconds. That means nearly 80% of all readers left after 10 seconds--not a positive sign in terms of compelling content.