Millions of children are signing up for Facebook, and a recent survey released shows parents are helping their children lie to get online.The minimum age Facebook or its social network is 13 — in line with federal laws to protect children’s online privacy.Yet according to a study funded in part by Microsoft and universities, more than half of all parents with 12-year-olds said they knew their children were signed up for the service. One in five parents of 10-year-olds knew of their children’s activity on the site. Asked how the kids signed up for the service — thus violating the site’s terms of service — nearly seven in 10 parents said they helped their children set up accounts. According to the survey, one in five parents acknowledged having a 10-year-old on Facebook. That number rises to 32 percent for parents of 11-year-olds and 55 percent for parents of 12-year-olds. My client, parenting expert Betsy Brown Braun and bestselling author of Just Tell Me What To Say and You’re Not The Boss Of Me, shares her insights on this new trend with WTOP radio in Washington. Have a listen.