Now, let’s get to the Keyword thing.In my blog post I wrote that I believe that Microsoft tweaked the windows keyword relevance. That was an oversimplification.

Whatever they call it, today’s search engines use the pagerank concept as part of their ranking mechanism. Pagerank basically means assigning a value of some kind to a site based on the links coming from other sites. Every link from another site may have a different value, depending about how important the linking site is.
Can you see the pitfall ? Where does this chain begins ? How can you know how important is the linking site ? You have to determine how important are the sites linking to it. But how important are those also ?
It’s a chain with no end. There it comes the concept of ‘respectable site’. Those sites have tipically a forced page rank, as they are considered ‘trusted’ and ‘famous’ by the search engine, and the page rank distribution flow starts from those.
Example of respectable site include (or used to) Wikipedia and Dmoz.

It’s pretty clear how a (even slightly) biased selection of ‘respectable sites’ may influence the relevance of keywords and query result. That accentuates the of websites about windows. In turn, when you ask for linux, the results returned tend to be slighly more likely those linked from Windows websites and forums.
(guess what would people in windows forum say or ask about linux ? “hey, what’s linux and how is different?” “geez, I tried linux, but I like Windows more.”)
At the same time, you get as less differences as much as your search terms are precise. And no, I don’t think they censor anything nor they tweak results manually.

Now, this is MY take. And seeing how long it was to write you can guess why I didn’t explain better in the post.

Is bing good ? Until they can’t give at least the impression of not being biased I’d say no.