SIOUX FALLS, S.D. (KELO) -- A kidnapping on Wednesday started as a conversation on social media. Now, a 20-year-old is behind bars, accused of posing as a teenager and kidnapping and assaulting a 15-year-old girl. Social media is nearly unavoidable for teenagers today. But as technology evolves, tee ns gain more access to dangerous people and [...] ...read more read less