This suggestion has been closed automatically because it did not receive enough votes over an extended period of time. If you wish to see this, please search for an open suggestion and, if you don't find any, post a new one.
It's useful when threads that got x replies withing Y time automatically get labeled as 'Hot' in thread lists (forum views ?) and what's new list. It helps members to spot lively discussions, it helps moderators to spot flaming & flooding.