With all the marketing and tactics that are used in search engine optimization, it is sometimes helpful to pause and think like a search engine. What is the goal of a search engine? To put it simply, they are trying to provide you with the information you are looking for based on your search. Search engines get smarter and smarter and even over the past 5 years, 3 years, or even 1 year, you can see significant improvement in the sophistication of Google and others.
Have you ever read the mission statement of Google?