Wondering whether using social media for advertising purposes is crossing the line? According to a new social media study by Nielsen, New York, one-third of people think ads on social networks are annoying; however, 26 percent are OK with ads that are identified based on their profile information, and another 26 percent are more likely to pay attention to an ad that has been posted by one of their social networking connections. The study also found that U.S. Asian consumers are the most likely to engage with social ads, while white consumers are the least likely to engage with ads on social networks.