Yes, good idea - although I'm sure I'm already registered for this via BT's Privacy Service. Although cold calls can be annoying, my main concern is that a company that has absolutely no connection with me is contacting people and claiming to represent me. That's fraud, isn't it? Especially because I've got no idea of what they're telling people or the methods they're using - then it could affect my reputation.
Most cold calls that I get seem to be from people that have read an NLP book as far as the section on rapport, half understood it at best, and attempt to 'be my mate'. So I'm quite looking forward to some pacing and leading ...

Ian