McDonald's Joins Snapchat--But Unfortunately the Calories From That Burger Won't Disappear in 10 Seconds

McDonald's has officially joined the Snapchat party. The fast food giant is now on the ephemeral messaging service (username: mcdonalds) and is using the star power of LeBron James to build buzz. The company spent a few days quietly promoting its new account on Twitter, then sent out a snap of James on Tuesday. The NBA All-Star is shooting a commercial for McDonald's, and photos and videos from the company offered a behind-the-scenes look at the filming of the ad. Seattle Seahawks cornerback Ric...