Police in Ogden no longer think about placing photos on milk cartons to find juveniles who are missing or have run away. Instead, they use social media sites such as Facebook and Twitter to help determine their whereabouts, said Lt. Scott Conley, head of the Ogden Police Department's Selective Enforcement Division.

"It's a good resource," said Conley, adding that following posts on Facebook is an effective way to track the activities of missing or runaway juveniles.

However, police are sometimes blocked directly from following the posts of those they are trying to locate. When that happens, they enlist help from the teens' friends and family members to access to their Facebook and Twitter pages, Conley said.