Google Sandbox is an imaginary area where new and less authoritative sites are kept for a specified time period until they establish themselves of being displayed on the search results. It happens by building too many links within a short period of time.
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Page Rank is a rank that has been provided by Google for each and every Webpage. This Rank ranges from 0 to 10. This Page Rank is calculated by an Algorithm used by Google Web Search Engine. PR of a web page is based on the number of backlinks that received from other high PR webpage.
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Search engine optimization (SEO) is the process of affecting the visibility of a website or a web page in a search engine's unpaid results - often referred to as "natural," "organic," or "earned" results.
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