Last week was a busy one for social media. In fact, Christmas might have come early for you with the reveal of Twitter’s new design and the long-awaiting roll-out of Facebook’s Timeline. If you were left indecisive about which shiny new toy to play with first, we have all the guides you need here, in addition to all of the other resources you might have missed this week.

OMD has hired former We Manage Social head Paul Gilbert as the national director of its social media unit OMD Word.

The social barometer that is Facebook has released its most talked about topics for 2011.

‘Facebook Memology’ “takes the pulse of the global community by unearthing the most popular topics and cultural trends – or memes – emerging on Facebook.”

The year 2011 brought exciting changes to social media marketing, especially when it came to Facebook. One such change is the ability to build customized landing tabs using iFrames, social plugins and geotargeting. These custom tabs open a world of opportunity for brands to increase Facebook engagement.

Seth Godin wants you to fail, but in a good way. In this interview with Behind the Brand, Godin explains why companies like Facebook and Google aren’t afraid to fail fast and why you should try it too.