In the Carrara section there is a thread = "Any news on Carrara 6" that has been closed. There was no comment about why it was closed and I see nothing there that seems to violate any forum rules. The questions seemed honest, straightforward and there was no apparent flaming.
Carrara is a legitimate forum here, and it would seem that questions about its current status are innocent enough.
Of course Polyloop can do whatever it wants with this forum, but I was just curious why this subject is not allowed?