Overview
Over the past decade, the Internet has seen a revolution that has completely changed traditional advertising and public relations. Many new global players such as Facebook, Youtube, Xing, LinkedIn, Google+, Twitter, Yelp, Picasa, Instagram, Pinterest and Tumblr have emerged and have already achieved a tremendous importance in marketing and PR in just a few years. According to an estimate, there are currently a trillion (1,000 billion) websites.
