Twitter's retrospective: http://2012.twitter.com/

Facebook's democracy that never was is now over: http://techcrunch.com/2012/12/10/facebook-vote-ends/

But they at least launched a preferred marketer program: http://venturebeat.com/2012/12/10/facebook-announces-new-preferred-marke...

And now lets users send each other gifts: http://allthingsd.com/20121211/facebook-pushes-out-gifts-to-all-u-s-user...

Leading some to wonder if there's still some hype to social media: http://readwrite.com/2012/12/10/sorry-but-a-lot-of-social-media-wisdom-is-pure-bullshit

Serving customers with social media isn't for everyone:  http://blogs.hbr.org/cs/2012/12/should_you_bother_using_social.html