my suggestion would be to drop the idea right now. that's probably not worth legal consequences you might be facing.
you server's ip will be seen by service you are stealing data from, os they will have a way of telling you apart from regular users.
at the very least if you'll get caught your hosting account can be suspended (if site in question has any copyright statament).
use API as mlseim said.
Last edited by patryk; 03-27-2013 at 02:40 AM..