So I know that after a Q gets 20 upvotes (200 points), the guy who asked the question stops getting points.
I think the point limit is useful, so that a user doesn't just post one popular question and end up getting enough points to gain privileges quickly. - Pokemaster
Directly taken from one of your answers about the point limit. We are not in the old days anymore, where one question that would have spelling errors would fetch about 5 upvotes. I think that if a question gets a lot of upvotes, the guy should get all the points. Nowadays, questions that gets that many points are very rare. Anyways, the reason for adding the point limit thing is kind of weird, because no new user comes on and asks a question that gets more than 20 upvotes. That's awfully rare..