The main CLARING feature is the BLOCKING feature. The conversation gets moved into another "folder" yet it doesn't allow their messages to come through into the conversation when in the blocked folder at all, so if you block someone any messages they send you will never get, THATS NOT GOOD. So if you block someone they are eventually going to realize it when you don't get any of their messages. Yet spam messages get through THAT MAKES ZERO SENSE.