I'm so late to this, ahving avoided these threads til now, realising that their omnipresence in active convos meant trouble!
I would just like to add my tuppence though.
The posters who started or participated in these threads have been labelled as attention seekers, mawkish, ghoulish, rubberneckers and worse - the inference always there that they are taking some pleasure in this awful case and the opportunity to pour out their fake-grief/horror.
But what strikes me about the posters doing the majority of this mud slinging is that they seem to be using this whole thing as a posturing excercise - kind of what they are accusing others of.
Its very easy to ignore these threads, very easy. but those saying they hate them are right here in the midst of it all, just to let us all know how truly awful and horrific they find the people who find the case awful and horrific.
To me its all two sides to the same coin. A need to very publically have their views heard. Though I would say that the anti-grievers are coming from a far more cynical, self-serving place.