I've noticed with Bing, though, that some websites do not show up on the first page of results by typing in their site titles. For example, if you type in the name of one of my websites in Google, the first 2 results are for the proper website. However, on Bing, if I type in the title of my website (two words), it doesn't show any results for my website on the first or second pages. The only way to get it to show the results for my website is if I type in the full domain name of the site - then it shows the proper results. I suppose that this could be because it is still spidering sites for data, but it's quite interesting that this is an issue. Now, my website isn't the most popular in the world, but it has enough traffic to be in the top results when the full name of the website is typed in (which is only 2 words).
Obviously, Microsoft has more work to do here.