It wouldn't surprise me at all if zzshart were attempting to shut down Bob's site with a DOS attack. He has singularly failed to even tread water on the open forum BAF board - and isn't allowed to spill his hatred and vitriol any other place where it might accomplish what he wishes.
Bob can check IP addresses of excessive requests to see if that is what happening - but don't know what he could do to stop it. So probably not worth the effort.
Or it could be some other shart-like character that simply wants to shut down ANY site where conservative views and sound logic are still be exhibited.