yyahoo: Okay, let me posit this. GOG watches and lightly moderates the forums. There have been countless (20+?) posts about downrepping issues over the past few months. GOG in its moderating oversight reads those numerous threads. Why do we assume that GOG has not looked into this if it really is that important to them? Considering all of the posts and wishlist request and votes, etc, I don't know how GOG would not be aware of this alleged behavior and why they wouldn't have done something about it if it was happening again.
I believe, if anything, the assumption comes from their silence. They could quell the complaints by saying "It is a problem, we're looking at the best way to deal with it" or "We've looked into it and no-one is being targetted".
yyahoo: Also, I'm wondering what exactly can be done to stop this alleged behavior. Let's say this mystery user is discovered and all of his accounts are closed. What keeps him from going out and opening another 100 accounts and keeping up his alleged mischief? According to the history you've provided, GOG has already made changes to the rep system because something happened in the past. Are they going to make more changes? What could they be?
As I am going to bed, some possible changes that could be made:
1) Require a minimum amount of rep to downrate posts
2) Require a minimum amount of join time to downrate posts
3) Require a minimum number of posts to downrate posts
4) Disable downrating from accounts that have had no activity for X days
5) Flag up to GOG staff when multiple accounts are created from the same IP to be reviewed after a week
6) Limit the number of downrates possible per day (either per downrating account or against a particular account)
7) Flag up when one account suddenly gains a lot of low-rated posts
8) Flag up when one account hits the maximum rep loss a day for X days
9) Make the post rating system more transparent (i.e. not anonymous)
10) Make downrating not affect rep
11) Add "ignore user" functionality
12) Set controversial posts (those that receive a lot of both up and down ratings) to 0 rating and disable further ratings on it
13) Add in a meta-moderation system
14) Bias post ratings to the rep of the rater (i.e. someone with 200+ rep would +1/-1 but someone with 10 rep would +.1/-.1)
Please don't pick apart any specific suggestion. I have given
literally no thought to them so most of them are probably broken :)