Social media sites have become extremely popular places online. Over 60% of the global internet population have joined a social network, and activities like visiting social sites and reading blogs are now common online behaviors. The use of social media is growing rapidly, with hundreds of millions of photos, videos, and articles being shared every day on major platforms like YouTube, Flickr, Wikipedia, and Facebook, which has over 500 million users. Companies have also seen success engaging with customers through social media, with Dell reporting over $6.5 million in sales from its Twitter account alone.