Wavie have you tried tps online thing? Does it work?
Stuart
It certainly does! I can't remember the last time I got a sales call. The reputable firms all have "clean" mailing lists, so won't phone. If anyone does call, you just string them along for a while till you get a name and phone number from them and then tell them your registered with TPS. Normally the line goes dead, great fun.
Our phone company (Telewest) has an option to not accept calls from anyone who has withheld their number. That's a great help too. Unfortunately my uncle was in a hospital which had something like this on it's switchboard, and one of the nurses had to call us from her mobile - some you win, some you lose!