BOSTON (CBS) – As social media continues to expand both in numbers and in scope, more and more of our day-to-day communication takes place on these platforms. But does social media enhance our lives or detract from them? Will online communities like Facebook and Twitter become our primary communication tool? Harvard Professor Mikolaj Jan Piskorski is an expert on how and why we use social media.

Originally broadcast August 3rd, 2012. Bradley Jay is in for Dan.