<P> Researchers found that questions seeking factual information received few answers and that the knowledge on Yahoo! Answers is not very deep . </P> <P> Despite the presence of experts, academics and other researchers, Yahoo! Answers' base consists of a much more general group; hence, it has been criticized for the large number of dubious questions, such as "how is babby formed how girl get pragnent" (sic), which sparked an Internet meme . </P> <P> This "Internet language" of incorrect spelling and improper grammar also contributes to Yahoo! Answers' reputation of being a source of entertainment rather than a fact based question and answer platform, and for the reliability, validity, and relevance of its answers . A 2008 study found that Yahoo! Answers is suboptimal for questions requiring factual answers and that the quality decreases as the number of users increases . One journalist observed that the structure Yahoo! Answers provides, particularly the persistence of inaccuracies, the inability to correct them, and a point structure that rewards participation more readily than accuracy, all indicate that the site is oriented towards encouraging use of the site, not offering accurate answers to questions . The number of poorly formed questions and inaccurate answers has made the site a target of ridicule . Likewise, posts on many Internet forums and Yahoo! Answers itself indicate that Yahoo! Answers attracts a large number of trolls . </P> <P> The site does not have a system that filters the correct answers from the incorrect answers . At one time, the community could vote for the best answer among the posted answers; but that option was disabled in March 2014 . For most of the life of Yahoo! Answers, once the "best answer" was chosen, there was no way to add more answers nor to improve or challenge the best answer chosen by the question asker; there is a display of thumbs down or thumbs up for each answer, but viewers cannot vote . In April 2014, this was changed to allow for additional answers after a best answer is chosen, but the best answer can never be changed . Also, while "best answers" can be briefly commented upon, the comment is not visible by default and is hence hardly read . (Even the user who posts the question isn't notified, before or after the best answer is picked, about a comment on the question or on the best answer .) If the best answer chosen is wrong or contains problematic information, the only chance to give a better (or correct) answer will be the next time the same question is asked . The older answer will likely get higher priority in search engines . Any new answer will most probably not be seen by any original questioner . </P>

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