Microsoft this week announced its new "decision engine" called Bing. It's a challenge to Google and the promotional video --- knowing that all promotional videos feel this way --- is impressive. Some early testers like John Batelle have come away impressed.
Today, though, Google announced Google Wave, an integration of communication devices and services, available later this year. It seems to me it's a challenge to Windows, although that's shortchanging its ambition. Mashable is impressed.
Whatever the outcome, let's assume it's good for the consumer.