I could see a system similar to this working into a temp "shadowban" system, where, if a poster starts spamming up a forum or comments section, said banned users' posts can't be seen by anyone else but the poster, and all discussion threads created after the "ban" by said poster are discarded, _but_ still show up as if they were successfully posted.

This could help clean up a lot of "OH ME TOO LOL" or "first post" posters if they're trying to get around those filters, without the user realizing he's been banned and start retaliating.

A bit of a "12 year old" filter, if you will. :-)