Answer: 23%

According to a March survey by Ponemon Institute, a privacy think tank, 35 percent of hiring managers use Google to do online background checks on job candidates, and 23 percent look people up on social networking sites. About one-third of those Web searches lead to rejections, according to the survey.

Source: http://www.msnbc.msn.com/id/20202935/ns/business-personal_finance/