In order to provide more 'actionable' posts to deal with, I've started looking at comments around 6 days nearing payout.
I've now run into voting circles, basically stealing rewards for poor or outright illigitimate content. This is something new so I'm hoping to find a way to curb these abusive beahviors as well.
In my tables below, I show the hours left until payout. Rewards are locked at 12 hours so I'm trying to give a reasonable amount of time before that. Also, the rewards noted here are estimates because I do not have explicit rewards in my data today.
If you've got some spare VP and would be willing to help move these unearned rewards back into the rewards pool please consider downvoting a few of these posts.
and 
These two accounts are pretty absurd. First of all, will regularly comment "Welcome to Steemit!" in #introduceyourself, which is somewhat innocuous if you look past the bandwidth issues. Yet,
is upvoting each of these around $0.39 each.
Far worse, will make a comment like this which is literally a period, a single character, and
comes to deliver a $1.33 upvote.
This is the continual post of just "1", again one single character, and then self upvoting it over and over again.
and 
Much like we saw earlier, is continually posting to #introduceyourself and
drops an $0.18 upvote on it.
and 
I don't even need to post on these two because already came through and handled this one, thanks for all your work!
and 
Once again, repeatedly commenting #introduceyourself to pass along upvotes.
and 
It's now an obvious trend, the introduce yourself comment upvote circle.
and 
These are single character comments, "0" this time.
and 
This one is just a random comment duplicated everwhere by and then upvoted by
as well as a self upvote.