Is there a downvote system?

So I've noticed that this forum like almost any tech forum is full of people who just respond to every single post with some answer that may or may not be relevant. they are then rewarded for that participation even if their answer is totally irrelvant or useless. Some people just cut and past the same exact answer to every post. 

Frankly, I find forums to be the most useless place on earth to get help because of this. Some forums let you downvote answers to discourage this behavior.  I would really like it if Adobe did this.