Between uBlock Origin and uMatrix I hadn't even realized. Prior to seeing these comments I had actually been impressed by the site's (apparent) responsiveness combined with the (apparently) clean and mostly pain text layout. Whoops.

I'm running UBlock Origin and UMatrix too. And both of them are blocking eyereturn.com. But because I've got Firefox to alert me to fingerprinting (not a default option I think) I also got a little pop-up informing me that the site was using it. Which advice I appreciated even though I was already protected by those two earlier mentioned services.