Cyber Poser — Mari Kesselring

"A former classmate, Olivia Bates, reconnects with Bridget on her favorite social networking site. But Bridget's not quite sure she remembers Olivia from way back in first grade. Using some online tricks and a new app that her dad's company designed, Bridget set out to discover whether Olivia is a real friend or just a cyber poster"--P. [4] of cover.