I said the popup was annoying but not deceitful. Those are two orthogonal axes. Your question is about what's acceptable. My answer is: 1. If the site tricks

I said the popup was annoying but not deceitful. Those are two orthogonal axes. Your question is about what's acceptable. My answer is: 1. If the site tricks me (makes me take an action that I would not have taken if the site had not misled me), that's unacceptable. So, roughly any degree of deceit is unacceptable to me. 2. If the site stops me from switching/closing tabs, or changes system settings (like the ones you describe) without me being cognizant of agreeing, that's unacceptable. Showing 3 popups within a tab when I'm about to close it: that's annoying and douchy, and probably won't work on me, but I won't hate you for it. From your list, c-j would definitely make me hate you. a and b might be OK if you're presenting me better offers (e.g. 10% off the first time, then 15%, finally 20% off the third time).