It's a safe assumption that most of us use social media on a daily basis, from Facebook to Twitter to Instagram to Yelp. It has become a fundamental part of our lives, as some of the authors point out in the section of the textbook titled "Are We in a Race Against the Machine?" However, some of the articles in this section also address the problems that social media continue to present. What are your thoughts on this issue? What's the biggest challenge posed by social media?