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The three-click rule or three click rule is an unofficial web design rule concerning the design of website navigation. It suggests that a user of a website should be able to find any information with no more than three mouse clicks. It is based on the belief that users of a site will become frustrated and often leave if they cannot find the information within the three clicks. Although there is little analytical evidence that this is the case, it is a commonly held belief amongst designers that the three click rule is part of a good system of navigation. Critics of the rule suggest that the number of clicks is not as important as the success of the clicks.[1]