Those listings in the stalker report have been there, unchanged, since the day I first opened ww.com. There hasn't been any new cases of stalkers on the site that I know of.
Oh...wait...there was that person, last year, who would come into someone's chat and spam nasty, rude, coarse and insulting posts. The mods would step in and ban the person and they would come right back and do it some more. That person was basically a troll and the most effective way to deal with it was to ignore it. After a little while it would get tired and go away.