This thread has a lot of shaky analogies with physical trespassing. Here's an article on trespass laws (in California) - the article is more interesting than you would expect and the trespass laws are more complicated than you'd expect. http://www.shouselaw.com/trespass.html
It looks quite similar to Washington State trespass law in practice. If anything it might actually be broader, our criminal trespass statute up here tends to be interpreted rather narrowly because it's somewhat lacking in detail.
