I agree with you completely, Angel. But many (perhaps most) companies aren't that careful and just don't have our interests at heart. We have to protect ourselves as much as possible because they're not going to. Even though they really should. Our options are to not give them our information and/or our business.
If you want to drive the point home, remove your profiles from that site in protest and write to them (hard copy if you can get a physical address as well as e-mail) to tell them exactly why. They might wake up a bit if enough of you do it.
Oh, and thanks to Alice and LH for caring enough to watch out for us. Even when we're consorting with the competition. %-)