They are generally used to qualify (loosely) the quality and or reliability of the answer you may be receiving to your questions from the person doing the answering.
This of course is not etched in stone, but meant as a guide.
Hope that helps a bit
Creative Genius
Quote:
Originally Posted by blackmoon
OK I looked and looked and can't find the answer to this question. What do the rep power things on the user profiles mean? 
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