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OP, you might want to link to some specific posts or quote them here or something, and that link archive.fo just keeps saying "loading" for me. The reason I'm suggesting this is that I can't view any of this member's post history because apparently I have all the sections he/she posted in on ignore--and there's no way I'm going to fool around with my ignore boards list just to view some shitposts. You haven't even mentioned what section(s) the posts are in.
From what you did post, however, it does sound like there's some spamming going on but I'd like to see the posts for myself. And other members might have the same difficulty viewing them as well.