Comment by Routinism

Nothing at all. Working with the data industry, I've been blown away by the links every advertising network is trying to make between the crumbs we leave all over the place. Expect your TV (not even a smart TV) to be displaying ads based on your browsing history in the near future, all linked by your IP address. The data industry will absolutely whore your data all over the place. Datalogix, BlueKai, and many others have raised millions to do exactly this sort of thing.