A wifi lightbulb? What an incredible idea! It's so cool - you control it from your phone AND you can pick different color options. This is fun and useful at home, the light slowly comes on before my alarm goes off. But the uses on the commercial side are endless - weddings, restaurants, bars, etc. The only reason it's a 4 and not a 5 is the price. $79 for one bulb - yikes.