A wise person stated "if you are not paying for the product, then you are the product", and there's more than a grain of truth in it. On the other hand, most of this sort of thing is about pimping adverts: people who listen to this buy that, or even the person (singular) who listeed to all this is likely to buy that - possiblh without necessally knowing you are (named person). would be slighlty miore creepy if they tey and sell you cycle parts, especially if you get Dear Mr Reiver