More than 9 in 10 companies believe that some form of data is essential to their marketing success.
One-third of respondents said they used LinkedIn only for business purposes, compared with 2% of Facebook users and 3% of respondents on Twitter.
Young people were most likely to have turned off geolocation, with 32% of 25- to 34-year-olds saying they had, along with 22% of 18- to 24-year-olds.
50% will share their religious affiliations, 49% their political affiliations and sexual orientation, and 42% their personal income.
A Q1 2012 survey of US financial professionals found that almost nine in 10 had an account on at least one social media service.