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How does Google+ impact seo?
Baidu has launched a huge update
Mobile SEO, Mobile Marketing
Google has confirmed to SEL last weekend that panda algorithm was updated again. Comparing those time, you can come to a conclusion that Google still randomly adjust algorithm by hands, no sustainable update process available.
Each update brings with tons of changes, visits of some sites drop dramatically. While people can clearly noted the direction of changes, and this make them follow the way to supplying high quality information to visitors.