Today's Food Network Stars must have a multiplatform presence. In the Mentor Challenge, Bobby Flay tests the social-media acumen of the finalists by having them each create a behind-the-scenes video selfie in the Food Star Kitchen. For the Star Chall... (more)enge, the finalists are teamed up to make an Internet marketing video for a Hershey's candy product. The videos are shot at YouTube's soundstages and judged by two YouTube executives. Whose video will have the judges wanting to hit "forward," and whose will have them "deleted" from the competition?