Second by second

 This social media network was launched on 4 February 2004 by Mark Zuckerberg and his college roommates Eduardo Saverin, and Chris Dustin Moskovitz Hudges. Nowadays each user spends an average of 40 minutes per day on social networking; it's impossible to block Mark Zuckerberg and the picture that has received the most 'likes' is the picture of Barack Obama embracing his wife, Michelle Obama.

Creating "The sms of the Internet" was the initial concept envisioned by the founders of Twitter, Jack Dorsey, Evan Williams, Biz Stone and Noah Glass, in 2006. Twitter users exchange comments with a limit of 140 characters in real time. Twitter has become the most extensively used social media platform for the coverage of live events.

Instagram’s range of photographic filters is one of the unique selling points of this social network which allows users to share moments through short videos or images. Founded in 2010, after only 8 weeks, by Kevin Systrom and Mike Krieger, on the day of its release it went straight to number 1 in the AppStore photography category.

YouTube is a video sharing platform, a distribution platform for original content and a global inspiration forum. Founded in 2005 by Chad Hurley, Steve Chen and Jawed Karim, YouTube now has more than a billion users.

Released on May 5, 2003, LinkedIn is a social network platform dedicated to professional and business networking needs. The page has more than 400 million users, most of which are American.

Pinterest is a digital tool for visual discovery used to find and share visual ideas about wide ranging subject matter. This social networking platform was developed by Ben Silbermann in 2009 and launched the following year.