I once used to contribute to them. But I had to stop because I am disabled and out of work. They have been calling me non-stop (about 3 calls a week lately) for over 7 years. It is so bad I never take any call from a number I don't recognise. This is a huge infringement of my right to privacy. I called them to plead with them to take me off their list twice, and after being given the typical call centre runaround and being told to call ANOTHER number, it did no good. I've tried every no call procedure and they won't stop. If they spent the money they waste on these call centres (all over the US) on citizens concerns it would be cool, but they don't. DO NOT EVER CONTRIBUTE, or you will never again be left in peace.