I have answered 471 questions and only 76 have selected a MHO..
Most Helpful Girl
They usually send out a message to the asker to select an MHO after a period of time. I try to keep up with those.
My thoughts are that it might be less active users who ask a question, then forget about their GAG account. But it may also be users who just don't care for selecting a MHO.
I used to be on Yahoo Answers and after a while if an answer was not selected as Best Answer, other users could vote on opinions. Then after a week or so the answer with the most votes got Best Answer. I think a system like that is needed here to help users who spend time answering questions to get points :)2
Most Helpful Guy
They are noobs sorry.1