... One way to prevent this flashback it to give everyone the right to completely block who they want from their account, and I mean fully block, that they can not vote/comment or flag their post, and likewise they would not be able to vote, flag, or comment on that person's post. Neither would see the other person post.
I like this idea. Like it VERY MUCH.
SPAM is #1 problem, and must be fight by all means
That is a great idea and would stop the problem!