OK, an electrician, or perhaps a carpenter simply walks through your front door into your house and decides what adjustments you need or should have? Whether you want them or not? Without your permission? That's what is being proposed.
Thank you, no! Any such site will be one that I avoid, as long as I'm aware of it. Web sites pick up enough data, rather casually, as it is. Now you want additional intrusion? The marketing value of this would be tremendous, of course, but Ive never met a marketer that seemed to have a soul, much less ethics or morals.
This proposal, while it has beneficial uses, would be corrupted before the script was even tested ... the real world would create a travesty of any beneficial intent.