But definitely I applaud someone thinking up ways to discourage downvoting save for actual abuse of the system, or awful behaviour. It's the same on Reddit but people do use the downvote button as a "disagree" button. Upvote isn't meant to be flat out agreement either, but a blanket "this is a good post, it added something worth thinking about to the discussion" whether you personally agreed with it or not. I'd say upvoting the posts/comments you felt compelled to comment on is good form, as by your own admission it's worth saying something about / in response. Unless you hate it and want to trash it lol.