[TeMPOraL]

YES! That would start to make sense. With such a setup, if I answered POST "agree=yes" and proceeded to GET your content while using an ad blocker, you'd have a right to call me an asshole breaking a social contract, and - if the content of that initial GET with contract met appropriate legal standards - you could probably even sue me for misuse of computer resources and win. Might be a hard case to win, given that nothing on the Internet is built with expectation of users having to fetch more than they want, but at least you'd have a basis for a case, because I did enter a contract with you and didn't held to my end.