Social media describes websites that allow users to share content, media, etc. Common examples are the popular social networking sites like Friendster, Facebook, MySpace, etc. Social media also includes YouTube, Photobucket, Flickr, and other sites aimed at photo and video sharing. News aggregation and online reference sources, examples of which are Digg and Wikipedia, are also counted in the social media bucket. Micro-blogging sites such as twitter can also be included as social media.
Which are top 10 social media?