Studies have shown that the human brain, for all of its intelligence and reasoning, prefers efficiency. Or, as a psychology professor of mine once said, "The brain likes it easy." That could be why we only tend to scan, at best, things like website privacy policies. And when that involves the world's most ubiquitous social media site, that ignorance can be dangerous. To find out to improve that state of affairs, Todd Hatton spoke with Murray State University journalism professor Elizabeth Thomas. She teaches and blogs on the subject of social media.