This week in social media, Twitter got pretty bruised by Wall Street, Facebook bought a fitness app and got rid of a couple of its less popular mobile offerings, and Whisper's CEO Michael Heyward duked it out with TechCrunch's Michael Arrington. Meanwhile, Tumblr added a huge swath of customization options to its mobile app and the Federal Trade Commission officially chided Snapchat. It's time for Social Media Saturday!
Depending on where you live in the country, Spring is back, or Summer is on its way. In either case, it's that time again: time to break out the drop-resistant smartphone case and earphones and hit the track to really get started on that perennial New Year's resolution. Here are the five best fitness apps to get you going and to track your progress.
