The so-called "into this, also lost here," because of its huge amount of content, and laid its position within the industry, attracting a large number of users to query data, learning; but because of the huge amount of content, but also produced such the uneven quality of content, from a large number of users is difficult to find the right content to the information content of the information obsolete, no longer apply ...... sort of problem, a serious impact on the user experience.
