Halo is using a new ultraviolet technology, UV-C, on their vacuum cleaners. This spectrum of UV light kills dust mites, viruses, flea eggs, mold, and other germs without the use of toxic chemicals. The sweepers have this light on the bottom, frying the little critters that live in your carpet. I think this is a powerful accessory for $499.
Implications - As technology becomes more and more advanced, it's really exciting to see companies finding new and creative ways to use it to make consumer's lives more convenient, safe and user-friendly. Products like this take futuristic concepts and make them a reality, and thus generate considerable word of mouth and consumer satisfaction.