A few minutes ago, I did a quick browse of my Facebook home page, clicking "Like" on some status updates that I liked and providing positive encouragement for someone who was having a rough day. "Dislike" button? Nope, not present. Conducting a quick Google search, I learned from Paul Sawers' article from The Next Web that Firefox actually does have a "Dislike" button add-on, but Facebook itself certainly does not. In acknowledging this, Sawers makes a key observation about why Facebook has no reason to add a dislike button: social media is deeply rooted in building up network relationships and spreading positive spirit . In creating a positive, accepting atmosphere, Facebook gives companies, charities, and other causes room to promote themselves and their works, of which people can show support by clicking the "Like" button. In turn, Facebook can sell the surrounding ad space to make revenue. The power of positive thinking ...