As of September 2015, the most popular social networking websites according to eBizMBA are Facebook, Twitter, LinkedIn, Pinterest and Google Plus. The eBizMBA rank for the popularity of websites is calculated as the average of each website's Alexa Global Traffic Rank, and U.S. traffic rank from Compete and Quantcast.
Facebook is the world's most popular social media site by a large margin, with over 900 million unique visitors each month. The only website of any type with a higher Alexa ranking is Google. Facebook users create a profile, add other users as friends, post status updates, messages, videos and photos, and receive notifications when others update their profiles. Users also join groups and connect with the pages of brands and celebrities.
Twitter is an online message service that allows users to post and read "tweets" with a maximum length of 140 characters.
LinkedIn is a business-oriented social networking service that allows users to interact and find jobs with others in their professional field.
Pinterest is a visual social networking website that allows users to post images and videos by "pinning" them to a virtual pinboard. Users typically organize pinboards around a central topic, interest or theme, and share their pins with others.
Google Plus is an interest-based social network, run by Google. Members organize other users into "circles," which group together those with common interests, characteristics or demographics.