I love this feature, but for it to work it needs to be used correctly and not abused. I have a feeling this is gonna get extremely downvoted just for the irony but I'm okay with that providing people take it on board.
You shouldn't -rep people because you disagree with them, you -rep people because they're not contributing to the topic, or being hostile, or whatever.
It gives us a chance to actually reward people for good content on the forums and rip into anybody you posts a shit comment on a Member app or who shitposts on serious topics.
Please try to use this feature seriously. We've been given a nice tool by the higher ups, and if we abuse it then they're gonna take it away and give us less of the things that we ask for.