CTPS: Nice idea, but no cigar
It has happened, and good thing too. I can now put my name on a database, which means I can never get cold-called again from second-rate companies. Companies looking to squander my time, selling me stuff I don't need; from widgets, beans, courier services, to nice advertising space in a glossy, well-targeted and extraordinary well-placed monthly trade magazine! Look Mr Telesales Guy, I've got a business to run, and your calls are wasting my time.
I am now safe. My personal space cannot be rudely violated. I am at one with my soul. I am safe to pick up my phone and only expect a familiar, possibly family, voice. Never again will I feel awkward at my desk, trying to rid myself of the 'Tele-caller with no Name'.