It comes as no secret that everyone is talking social networking. Facebook, Myspace, Linkedin, Twitter, Tumblr, and so on. Hundreds of millions of people interact on social media sites each and every day. Who uses what? Where do women go? Where do seniors go? Marketers want to know where their target audience is. This infographic from ignite social media gives us a wonderful snapshot of where the world is online today. Which of these sites do you use?