Currently, the reasons for downvoting are rather limited, there’s only Off-topic; Already Posted; Poorly Tagged; Poorly Titled; Spam. However, when I downvote it’s usually because the post is simply not very interesting or old news (i.e. several months old), but none of the downvote reasons apply.
Is it on purpose? Are we not supposed to downvote when we don’t find the story interesting? Just curious as I couldn’t find the rational for the limited choices in the About page.