To be absolutely clear about this a post of mine was banned several times. Mike and Iain have both explained that it is due to my naming certain products and have tried to resolve the issue. Normally, as for example in an email from Gary, there would be an invitation to buy in a link. So it is a spam filter issue. In the context of AtP I think it is perfectly reasonable for me to have explained the history of these materials. It is very much more reasonable for PrimeGrid to block people with no credit from mentioning them.
Iain will doubtless see this post. I am not sure Mike will but if the message could be passed on I'd be obliged.