There are many content sharing sites and the number is growing. Below is a list of 20 content sharing sites that are worth your while. A content sharing website is a site that allows users to post or publish their own material to the visitors of the content sharing site. The posted material is almost immediately made public and can be accessed by anyone who has Internet access. If you are looking to reach readers for a particular niche or to test drive a publication or simply to share your expertise, content sharing sites are a good avenue for that.