Social media are computer-mediated tools that allow people to create, share or exchange information, ideas, and pictures/videos in virtual communities and networks. Social media is a phrase being tossed around a lot these days, but it can sometimes be difficult to answer the question of what is social media. The latest news, videos, and discussion topics on Social Media Being13, a groundbreaking CNN study, explores how 13 year olds use social media and why it matters so much to them. Here are the top 15 Most Popular Social Networking Sites ranked by a combination of continually updated traffic statistics. The latest happenings in social media, plus tips on using Twitter, Facebook, YouTube, Foursquare and other social tools on the web. How social media marketing can be part of your business strategy. Get advice, tips and insights from the experts. Forbes is a leading source for reliable news and updated analysis on Social Media. Read the breaking Social Media coverage and top headlines on Forbes.com Our mission at Social Media Today is to create and to curate conversation around the world's most innovative business practices, so that we can make your work more. Social media is the collective of online communications channels dedicated to community-based input, interaction, content-sharing and collaboration.