I got annoyed with Reddit's tendency to downvote anything they didn't like. The lack of a downvote option on here intrigues me!
It's on here! It's a filter that removes the majority of the gamification aspects of the website. Namely, share count and follower information. You can find it in the drop down menu on your settings page. If you don't know how to get there, just click your username on the top left corner, then click the link that says "settings." The zen option will be on a drop down menu in the third column of your settings page.
but then the only outlet for a negative response is to leave a comment. Then the comments tend to be mostly negative as some or all of the positive responses were just "likes". You need a quick response for both positive and negative.
Hubski runs on thoughtful discussion. There is no "quick" way around that (e.g. up/downvotes) on here for that purpose. The hubwheel serves to share comments or posts with people that follow you so that they may view it as well. Sharing says "hey, I want you to look at this too" rather than "hey, I really approve of this."