Pageviews versus Unique Pageviews
Author: W. K. Hayes
A Page View represents how many times a page has been viewed.
A Unique Page View is where a tracking cookie is used to determine how many actual views were made by seperate individuals.
For example, a person might click on one of your hubpages and read the article. Then, they might decide they want to read the articles, again. The tracking cookie determines that as two page views but it will only count that as being, one unique view.
The idea is to give you a better idea of how many different people have read the article verusus how many times it may have been reread by the same person. You can use this information to give yourself a clearer idea of what you need to do when trying to attract new readers.