Allow downvotes

It seems very unproductive to actual use cases that it is impossible to directly vote against any specific feedback item. In large discussion boards there are often posts with little to no value but the "only upvote" design makes it painfully obstructive to identify decent growing ideas from things that have simply not been thought through at all. Sites like Reddit support this just fine - don't fix it if it isn't broke. Practically, any post given enough attention will always garner an increasing number of votes - and without having access to the corresponding number of dissent, posts become pure popularity contests since any publicity becomes good publicity. It is impossible to see if a post is actually controversial or downright in a vocal minority because you polarise the results for a bubble of people that agree with the feedback - actually a very disturbing thought given the amount of misinformation and lack of healthy debate and criticism in the world as a whole today...