I've never understood the, minority backlash, for bringing back posts written long ago, years old even. It shows the poster used the SEARCH FUNCTION; this should be applauded.
It shows that the subject in question has been discussed, hashed and possibly rehashed perhaps to death?
It also show's the value of a forum that has a subject that can still be discussed, again, even years after the first introduction of said subject.
As to the latest iteration of prstorm:
It was incredibly successful when it first came out and was SO abused that huge, I mean millions huge, numbers of blog owners simply turned off comments. As most, serious, blog owners still run moderated comments only I doubt that prstorm is going to make a sudden comeback.