Frequently, on Area 51, as I see example question reach 10 upvotes, I move my vote to one of the more "underappreciated" questions - my rationale is that while one new user can bring 5 questions from 9 to 10, it takes ten users to bring a new question from 0 to 10, so the vote serves better elsewhere.
Still, I wonder what impact my action has on author of the question: do they lose the 5 points and the "Good Question" badge? And if the badge stays, what happens if the question reaches 10 again?