Yes, I know - BWMT has been around for years. But how many of you knew that Bing provides you keyword search data (whereas Google doesn't). Or that Bing provides WAY more insights into your website errors (404s, 500s, etc). For those that have a website I highly recommend installing BWMT. I think you will be pleasantly surprised by the amount of data and insights you can pull from it. (keep in mind the data includes yahoo search traffic as well).