Islamic Sciences place a great deal of importance of Identity and Character moral values of a Muslim narrator who replies to Islamic question. This site seems to ensure a good scope for any geek who gives beautiful looking answers with 'n' references and a closely knit nexus of like minded geeks. But the traditional Islamic scholars put a great deal of emphasis on the identity and life of the user. Agreed it is not possible to know the life of the narrator here but it is definitely possible to enforce narrators to reveal their real VERIFIABLE identity.
There should be template form decided that would require each user to reveal information like Education, Religion\ Sect , fathers name , Short Biography etc Although all of the above can be faked but this can be made verifiable by linking it to any online presence of the user like Home university profile, Employer login etc. Critical information to be available only to the moderators.