One tells you something relevant to what sort of domain - what to get them. The bartender doesn't tell them about your nasty divorce, trouble at work, etc. Like

One tells you something relevant to what sort of domain - what to get them. The bartender doesn't tell them about your nasty divorce, trouble at work, etc. Likewise Google doesn't just hand out your embarrassing search history to the highest bidder - because both would be both wrong and absolutely terrible for business.