Not sure how much to trust it, given the lengthy disclaimer (‘anecdotal’, ‘proof of concept’, etc)… but it’s good to see Microsoft offering hard numbers on the keywords used in searches. Not quite as great as the equivalent from Yahoo, which gives precise numbers for each keyword – and for each combination using that keyword. Still my favourite data source out there. Still no sign of Google sharing its numbers.
If you do any serious writing for the web, especially in a commercial role, you should be checking these two sites. Use the same words in your headlines and page titles as people use in their searches. This is how to buy your way up the Google rankings.