Who’s Google’s customer? You? Really? When’s the last time you paid Google for anything?
Advertisers are Google’s customer. What do they sell to advertisers? They sell you. Or, at least, they rent you out, or provide access to you.
If you aren’t paying for it, you aren’t the customer. You are the product. Keep this in mind, as you use and rely on free services like Facebook, Google or Twitter.
(Reminded of this by John Gruber.)
