I have no real rages on the site, but what has worked me up in the past is watching the site discussions about major changes. seeing user's logic about "problem solving" or "what is fair" can be frustrating. Overall this is a site that people go on to relax, and when users tilt their hands for personal reasons its frustrating to see users compromise the user experience for personal pleasure. I'm fine with trolling, but when people defend dumb policies, it offends me.