Yo is a great way to annoy your friends, but it could also turn into something much more — a simple way to manage push notifications across multiple apps and gadgets. On Tuesday, we got the first taste of how Yo might actually be useful on a daily basis. The company has launched an IFTTT channel that lets you automate light switches, air conditioning, Belkin WeMo devices, and phone calls, all by sending a Yo to IFTTT. For now, this means you can only set up one function at a time, which is unfortunate. Here are some of the many ways you can use Yo with IFTTT: Send a Yo to IFTTT to turn on your Aros air conditioner unit; Send a Yo to IFTTT to log a gym visit using Jawbone UP; Send a Yo to IFTTT to tweet something, like "Just arrived at work"; Send a Yo to IFTTT to turn your Philips Hue lights off; Send a Yo to IFTTT to have IFTTT call your phone (to get you out of a meeting or a bad date).