This question already has an answer here:
Sometimes, questions get popular and out of hand. They start accumulating answer over answer, typically by low reputation users, typically not saying anything that wasn't said already. Even when you get eight or so actually different ways to grind reputation on Borderlands 2... it's not like you really need more.
I think that protection could be a fair way to put a speed bump on these questions and limit somewhat the amount of answers they get. What do you think?