Kidfluencers' rampant YouTube marketing is a minefield for Google

On Feb. 13, JoJo Siwa posted a YouTube video from a Target store, detailing her plan to buy "every single item of JoJo merch" inside. She starts with clothes, piling her own trademarked shirts and dresses into a cart. "I literally got one of everything I could find!," Siwa says to the camera. "Now, let's go see if they've got toys."Siwa encapsulates many of the things that made YouTube the world's most-watched video site. She dances, sings and screams excitedly into the camera, drawing millions