Regarding the number of people who participate in Q&A's, I have a feeling that some subject areas are underrepresented in MO, while there are many knowledgeable experts in these areas which probably don't even know about MO or they have not tried it yet. I was thinking it would be a great help for younger researchers (like myself) in MO if we could invite more experts from these underrepresented areas to contribute in MO.
Is there any mechanism to do so? Of course besides asking them personally!
Have you ever considered to discuss about new ideas for attracting more mathematicians to MO?
Do you have any measure to evaluate my feeling about unbalanced rate of participation, answering and asking questions with respect to different subject areas?