Welcome

>The nearest analogy I can think of might be to fit a doorbell that plays a

> recording - and configuring it so that whenever anyone presses the bell

> it replies with "come on in and sit yourself down in front of the TV".

Or a door mat with "Welcome" on it?

Just because the door has a handle doesn't mean you can use anything you might find within.

The wheel nuts on my car aren't locked, although locking nuts are available, does that mean you can just take my wheels? Is it my fault because I'm too dumb to lock them up?

How screwed up are you lot if you can't see the basic morality issue of taking something that isn't yours, regardless of legality.

>It is not illegal to receive broadcasts in either the USA or the UK.

There are various laws regarding unauthorised access to computer equipment though.