Hi Gary
Not trying to defend them, but they do have a system in place "they say", which stops the competiton from trying to put you out of business by continuosly clicking on your site. They told me also, that you can "cap" your daily clicks in order to prevent your credit from slipping away on a daily basis.
Furthermore, I would personaly think that the type of business your partner runs would also be very relevant.
carpet cleaners run a service that youre either after, or youre not. If your girlfriend runs an online store of sorts or selling products, then she'd be open to "browsing", and people looking for cheaper prices...that said, we'd all be silly to display prices on our sites for obvious reasons, and we want people to call us, not compare us.