Social networks are used for communication purposes and are divided into different categories like personal networking, professional networking, and dating.  Social media sharing networks offer an opportunity for sharing photos and videos.  Consumer reviews bring together the various opinions of existing product and services users in a single place, allowing potential ones to form their own opinions, and accordingly decide if they should or shouldn’t buy the product.  Discussion forums – communities, Q&A services, and forums are among the first-ever kinds of social media platforms, the core pursuit of which is to share knowledge.  Social publishing platforms – these include blogging platforms where a user can publish text, images, videos, and other media.  Bookmarking and content curation platforms - bookmarking services through which a user can collect the content of interest in their personal libraries. This content can be followed and viewed by other members. Interest-based social networks - this sort of social networking connects people who share the same interests.