Well, we should expect lower spam messages in our inbox due to authorities successfully shut down one of the biggest spam ring, but that won't happened in short time. Even though one of the biggest one has been shut down, others will try to fill in the gap (like in the Pirates of Carribean movie where the Flying Dutchman ship must have a captain).
Let's hope people are scared by this event and stop sending spam messages, but i kinda doubt that will happen. Why? Because spam is a good business and it has good cash flow actually, so no wonder many people got their hand dirty on this.