Gurus :
A Guru is a user who has had 20 percent of the his or her answers awarded "Best Answer" status.
Answers are used for this calculation only if they are one of the user's most recent 50 answers, and if they are less than 6 months old.
A user must answer a minimum of 20 times before he is eligible for a guru score.Guru scores are calculated for the whole of Answerit as well as for each category
according to the same rules.