For digital agencies company, when it comes to search engine optimization and online marketing, they need to keep their eyes on what Google is doing. Because for last few years, the biggest search engine in world keeps updating its search algorithms, and for some companies that didn't know or follow about Panda and Penguin algorithm update, their sites are on trouble. The algorithm updates that Google did became main topics in SEO community, because they caused huge difference in ranking of search engine result page for most websites.
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