(I pray for the professional pilots rumor network to get rid of the non professional aviation nerds.)
Problem is, how do we do it? Certificate number required? Easy to lie about that and ratings, etc. I would suggest that the best that can be done is to require posters--not lurkers--to fill out full and proper profiles. No listing "east of the sun and west of the moon" as a location, no listing "doing what I enjoy" as a profession.
I don't know if there's an algorithm that can verify that such is done or not...