Why do not you read Google's blogs? Google has a bunch of official blogs. For each service and each service. If you're an AdWords advertiser and try to pass as cheaply and efficiently, you simply need to follow Google Adwords blog . Why? Therefore, to stay the course, because to understand how certain things work, because you know that major changes to adapt them more. If you earn through the Google Adsense program, there is the Google Adsense blog . On this blog published the test results and recommendations on how to earn more money. Blog is full of information on what is worth and what is not worth doing, why do not you read?
There is a huge amount of information related to a search engine that I published on its official Google blogs. These are the facts and information to very specific facts. If Google says that the meta keywords tag is not important, then the rating is not important for the rating. While many might say that we should not believe everything, I agree, but some things should be. I will prefer to trust the information on Google's blog, the information from an SEO blog, including his own.
Read the blogs.
