A content type is a way of categorizing files in Shelf that describes “what a piece of content is”. The majority of the time the “what it is” refers to the way content is presented, but in certain situation the more important and distinguishing factor is what the content is referring to.
In certain situations there is a degree of subjectivity when assigning a content type, and that is intentional. For example, a LinkedIn profile is technically a “Link”, but practically speaking it is a “Person”. For this reason, Shelf allows the user to decide how to categorize the content to ensure it is most useful to themselves and their coworkers. For a description of each content type click here.