Google’s been tight-lipped about the intricate, intertwined algorithms that make their search machine tick and we can only speculate how they rank web pages beyond the commonly known guidelines for web developers. A whole cottage industry is thriving out there, built on the presumption that one can reverse-engineer parts of the Google code so to affect search results and ensure the best possible placement. While Googlers aren’t about to spill the beans on the industry’s most closely-kept secret, they did reveal a couple of tidbits in a video published over at the official Google blog.

“While an improvement to the algorithm may start with a creative idea, it always goes through a process of rigorous scientific testing”, the company wrote in the post. “Simply put”, Google explains, “if the data from our experiments doesn’t show that we’re helping users, we won’t launch the change”. For example, did you know that the Google search algorithm is made up of several hundred different “signals” that collectively determine the results? Surprisingly, just last year Google perfected its search engine with more than five hundred algorithm changes, most of them rolled out quietly. More tidbits in that YouTube video, embedded above.

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