in reply to
Re^3: Minor problem with 'save destination as' for code.
in thread Minor problem with 'save destination as' for code.
That URL contains semicolons. My guess is that you didn't properly quote the URL. You'd get the gates if you didn't manage to keep the ";node_id=" as part of the URL passed to your GET tool.
The site isn't doing "anti-social" "browser sniffing" (really, it isn't). I'll refrain from expressing with insulting terms the conclusions I've jumped to as to what you are doing. (: