There are suggestions that would impact on other clients and/or we don't like, for example change this board for other is a suggestion I voted, nay... adding quote of day to servers is another I don't like, and so on...
Also if you don't have enought points (say it needs 5 to vote yay, you don't have the yay sign, as only 1 vote is needed for nay the button is present). that is probably what the image indicates.
That was a voted suggestion ;D that got implemented.
Somewhere, something incredible is waiting to be known.