You all should turn off the "negative" functionality of this tool, and only allow positive feedback - agreeing with ideas you like. Negativity encourages a lack of participation, and can make those who post ideas not willing to participate more when their idea is ridiculed. If the idea is bad, it just won't catch on, and that is not nearly the same.
Voting on Ideas
Vote for your favorite ideas by clicking on the up arrow.To undo an upvote, simply click the arrow again. This second click removes your vote.