Presently, it may well seem to users who are not yet familiar with MathOverflow that flooding the site with questions is desirable and encouraged behavior -- at least this is what the point system appears to suggest:
an upvote on a question adds more than twice as many points as a downvote takes away, which can make even questions with negative score yield points,
one can get an unlimited number of points for questions, also if one doesn't answer any question of someone else, and
neither questions being closed as off-topic nor posts deleted for reasons of moderation nor flags "cost" any points (except for spam flags, but these are not applicable).
Do people see a problem here which should be addressed in some way?
Added later: Some related data from the StackExchange Data Explorer.