Has anyone tried to sue BlockShopper in their county small claims court? It's fairly cheap like $50 and you don't need a lawyer - you can represent yourself. BlockShopper has to send a permanent employee to defend themseves at trial - I figure that's really worth the hassle even though you may lose the case and the $50. If enough people do it - maybe they'll allow people to actually opt out.
The complaint has been investigated and resolved to the customer’s satisfaction.