Where are these terms of service? I don't think most websites explicitly state that looking at ads or making your browser execute all of the scripts on the page

Where are these terms of service? I don't think most websites explicitly state that looking at ads or making your browser execute all of the scripts on the page is part of a terms of service. I mean, there are plenty of disclaimers about getting revenue from ads and referrals - especially on affiliate marketing sites - but I don't think I've seen anything dictating that I must perform certain actions with the files I download. I certainly don't think I've ever seen those terms stated before I download the site files. And informing someone of the terms of what they are agreeing to after they perform the action that implies agreement is incredibly shady. Maybe I have technically stepped into some kind of legally defensible contract by accident. However, I don't think tricking people into signing contracts that they don't want to sign is ethically defensible.