Social Media. Collectively,these Web 2.0 applications are commonly referred to as social mediabecause they have moved the locus of control for mass communications from large organizations to individual users.In other words,people as well as organizations control both the message and the medium. Organizations and individual users can easily share their thoughts,opinions,and experiences interactively with each other.Instead of a large organization broadcasting a single message to a mass audience,a massive number of conversations are taking place across the Internet.