I've been working on the coding to limit the amount of threads a new person can post. I have to proceed with some caution lest I damage the experience of "real" or legitimate new members. It's a delicate balancing act.
My plan is to push my code update tomorrow. It'll mean that members can only post a few threads per day until a certain set of things happen.
After that code update, we'll need to be sure to continue to flag each and every spam we see. Since there won't be hundreds of spams posted, there will be fewer reports. We need lots of reports for the system to take action.
I think the situation will be mostly resolved by tomorrow evening.