I came across a very interesting piece of news today that increased my belief in Google to be unbiased. If you search for the term Jew in Google till a while ago there is a sponsored link by Google explaining how their search results work.
The reason Google was forced to do this was because for the search term jew there were anti jewish sites that were coming up as the top most result in their search results. When a lot of high profile people complained about it Google chose to give an explanation of how their search results worked rather than remove the site from the search results.
This is proof that Google is completely unbiased and does not tinker with the results that their search algorithms return. This ensures that the results returned by Google are consistent.