Maybe this is tongue in cheek. Perhaps the "dissaprove" option should be eliminated. I have not encountered it on other sites.
I recently had a spat when, out of the blue, I recently had three dissaprovals in a matter of hours, without comment, on a post which was fifteen mionths old! Obviously a viscious attack in collusion, (or with a very immature sense of humour) but it does point to a weakness in the approval ratings.
As I would see it, assuming up to date posts, you should approve or leave it alone. All subscribers are , after all, trying their best to offer help.
If, on the other hand, the post is offensive or dangerous in any way, then it is for the moderators to censor it or remove it with comment.