[danielweber]

If I want to make a comment on your website, and you have a form auto-checked that lets you send me spam, I have at least a choice, and it was something that, in your absence, I wouldn't automatically have a right to do.

Now the question arises: do I have a right to send things to your inbox? You certainly have created an interface with an API that I am obeying, but I've never liked treating APIs as legal constructs (although many of my fellow nerds wish it were so) so it doesn't necessarily follow.

There is one issue with lack of notification. I could say that anyone who goes on my property owes me $500,000 for the pleasure of being on my property. I could even send registered mail to every person on the country to inform them of this rule. I don't think walking on my property indicates agreement, because even if they read and internalized my mail they have no way of remembering.

I really don't know where I'm going with this.

[yebyen]

It's really just posturing; hypothetically, going with your example you don't send those letters because you want or expect to get $500,000 from each uninvited guest, you send them because when you find the intruders on your property unauthorized you're going to be able to fire a round into the air and tell them "this is your second warning".

The goal is to get them to leave, or to never even come. Unless you were really trolling for $500,000. To part with that example, the law in question here specifically regarding inboxes requires opt-in, so only providing an interface to opt-out is directly against the law.

There is definitely no compatible land-owner analogy: if you greeted people at the border of your property and made them sign a declaration that they would pay you $500,000 for this temporary use of your property, you might have a case. They opted in.

I have a harder time imagining a judge who would see it your way when "you spent the $200 million required to reach every person and you said very clearly, 'your presence on my property constitutes acceptance of these terms,' so by law you should get the $500,000."