Bloomberg: Anticipating a boom in wearables after the introduction of the Apple Watch, digital advertising agencies are rushing to create ads and marketing messages for the nascent industry. In the past few months, about 15,000 people using the Golfshot app on their Android-based smartwatches saw a message take over the screen for five seconds. It started with “sponsored by.” It’s among the first wearable ads to go live, and in the future, no product with a web-connected screen will be safe, from home coffee makers to cars.