Lack of a "like" button:
I don't like it. If I appreciate a post then I have to click once to open comments, click again to pick then click one more time to post that. 3 clicks just to show I appreciate a post. So when I post something, I have to wonder, was my post worthless? Or was it worth one click but not three? I have to hope it was worth one or two clicks. Otherwise, what am I even doing here?