Facebook's (and your personal) year in review: http://newsroom.fb.com/News/549/Facebook-Year-in-Review-2012

Bing's social sidebar, redesigned: http://www.bing.com/community/site_blogs/b/search/archive/2012/12/11/the...

His Holiness sends his first tweet, and it's not about last Sunday's episode of Homeland: https://twitter.com/Pontifex/status/278808536404852736

Om Malik asks Twitter to dig deep: http://gigaom.com/2012/12/11/a-question-that-twitter-needs-to-ask-itself/

Google Analytics socializes it up: http://www.photocrati.com/social-google-analytics/