Twitter will use this to make your timeline better. Because we’re creating an event to track clicks on a specific type of link! When a link source is moved, the service passes information to the distributed link tracking server that runs on domain controllers. Click error monitoring finds and logs any broken links for me. This doesn’t change the way the PDF document is displayed or downloaded by your users.
We wanted to see: A) How many page views the PDFs were getting B) How long people were staying on these PDFs C) How prone they were to bouncing (just in case we needed to redesign them) D) The links we were getting to the PDFs E) Where those links were coming from The solution was pretty simple. See if you are using Classic Analytics (ga.js) or Universal Analytics (analytics.js).