If you piss-off enough electrons, people on the other side of the planet will see it. If you do it just right, they will understand it too... .
oh yeah, nobody mentioned the part of the internet where robots who speak english as a second language try to sell you things.
It's basically like a digital drug deal. The client wants to score some sweet data from the server and so they agree upon a meeting place and discreetly make the exchange.