Facebook declares, "We're a moble company": http://techcrunch.com/2013/01/30/for-the-first-time-facebook-mobile-daus...

Social media at the workplace makes people feel exposed: http://www.avgdigitaldiaries.com/image/41940383423

LinkedIn works for small businesses: http://allthingsd.com/20130131/small-firms-say-linkedin-works-twitter-do...

Google and Facebook keep to themselves: http://www.slate.com/blogs/future_tense/2013/01/30/mark_zuckerberg_faceb...

Twitter expands photo and video viewing: http://blog.twitter.com/2013/01/updates-for-viewing-photos-and-videos.html