Unlike the daily report, the number of unique users represents the sum of the number of different people who have accessed the site or file on a given day within the month.
Multiple visits per day aren’t counted for the same user, so if User A visits on 15 different days of the month, User A accounts for 15 of the unique users in the monthly report.
To access a file’s Popularity Trends report, browse to the library where the file lives, click the checkbox to the left of the file name, then go to the Ribbon, click the “Files” tab, and click “Popularity Trends”.
The number of unique users represents the number of different people who have accessed the site or file on a given day regardless of the number of times they visited the site or content.
Basically, the user is only counted once no matter how many times they visited the site that day.
You cannot get a Most Popular Items report for a site or file/document, only individual libraries.
To access the Most Popular Items report, browse to your document library of choice, mouse to the Ribbon, click the “Library” tab, then click “Most Popular Items”.
After hitting that button, Share Point spits out an Excel spreadsheet with a couple tables and charts. For the example I discuss below, I’m looking at a site Popularity Trends report for a fictional intranet home site.