At the end of March, Twitter acquired two companies specializing in social media analysis for television: Mesagraph in France and SecondSync in the UK. Twitter also announced an expansion of its partnership with Kantar (UK, Spain) and pointed out its partnerships in social TV with Nielsen (USA, Italy, Australia), Video Research (Japan) and GfK (Germany, Austria, and the Netherlands).
[Caught while filling in gaps in French coverage.]
SMA is retired. Check out the new project (mostly not about social media).