A billboard is bad metaphor for a website. With a billboard, you can get the information while standing in public or private space not owned or controlled by the advertiser. So a billboard is more like banner ad than a website. A website as a public store seems to be the better metaphor.

That could mean that creating a new account after your old account was banned could be a crime. That's like putting on dark sunglasses and a beard and walking back into the store after you've been kicked out. It's trespassing which is a crime. The difference is in the real world, simple trespass does not result in a life-altering felony conviction with a jail sentence.