I'm still confused by your ignoring of users using voting bots.

My thinking is the same as that for the #krsuccess - unfortunately, users are rewarded regardless of what they post. So the majority post junk just to get their rewards which hides the "more genuine" content. I know that this doesn't apply to everybody but the majority have ruined it for the few.

If you don't mind seeing mot users or shit-spam tags, then it's possible to include those posts too.