Google revolutionary approach to indexing the web was that it started to use the amount of hyperlinks to a page as a measure of its importance. Since then, they

Google revolutionary approach to indexing the web was that it started to use the amount of hyperlinks to a page as a measure of its importance. Since then, they have a strong "internet bias". If something is more present in the internet than in the "real" world, it would appear first. Searching for "Apple" used to display just pages about the company, not the fruit (even when the company was almost out of business). Searching for "samba" would display just pages about mounting windows filesystems in Linux, not the most important musical genre of a whole country. Nowadays they improved their algorithms and this bias isn't so strong, but it always important to remember that what is important in the cyberspace isn't necessary important for the whole world.