The Office of Public Health and Science's website 4parents.gov has launched a new campaign that encourages parents to talk to their children about remaining abstinent until marriage. The facts offered to parents such as the Birth Control Chart skew towards the negative (e.g., publishing typical use rather than perfect use failure rates), but at least they cite all their sources.
On the site's homepage you can view a Public Service Announcement which says "Tell your kids you want them to wait 'til they're married to have sex." An acknowledgment about sex information online is there too ("So talk to me about sex. 'Cause...It's all over the Internet).