The problem is in this case, no amount of blocking will work, because the site was completely broken without those, at least for me :-) Though I can reduce the

The problem is in this case, no amount of blocking will work, because the site was completely broken without those, at least for me :-) Though I can reduce the amount of divulged info for sure, but the very fact they're using them means my order details likely go to third-parties, and it's impossible to prevent that because it relies on that reporting in the chain of logic (i.e. order won't proceed until a successful response from the advertising APIs). The only technical way around that I can think of is to implement Signal's and other's API proxies and let it return back fake info to the site. But I'm not that obsessed about this issue :-) Another over-the-top way is to place the order directly against CVS APIs, using their cookies etc. Again, not worth spending time on..