One-third of respondents said they used LinkedIn only for business purposes, compared with 2% of Facebook users and 3% of respondents on Twitter.
Fully 61% of new vehicle buyers in so-called mature markets, including the US, said they had used some form of social channel.
The most common activities relate to posting and sharing content: 94% of these arts organizations use their website to post photos, 81% are posting or streaming video.
Roughly two-thirds of multicultural customers are now using social media (up 8% points from 2010) and mobile marketing (up 5% points).
Marketers are moving in greater numbers to newer media such as location-based applications and viral video.
A Q1 2012 survey of US financial professionals found that almost nine in 10 had an account on at least one social media service.