How does partnering with Twitter make Bing a more effective decision engine? Many people share their thoughts on Twitter, and search engines don’t currently do a great job of capturing that real-time content. We designed Bing to help you make faster, more informed decisions, and, since people often turn to real-time content to help them make decisions, BingTweets was a logical next step.
Federated Media has a post up on it as well, not adding too much. I fail to be wowed by this though, it lacks the fine-tuning of projects like ExecTweets for example. This is just a ticker, some trending topics, and the option to search Bing and Twitter at the same time.