I can make some user flow assumptions based on the the structure of this document. I can assume that when you entered this page the first thing you noticed was Arnold. Most likely the second thing you did was to read the title text to verify that this is actually a developers site and not a movie site. And since you are reading this sentence I can quite happily assume that you also understood that you had to click "Read the article" or scroll down to actually read the content on this web page. But how do I verify those assumptions? As far as I know, no one might read this text at all. So how can I find out how people are using my Drupal site?