Other than advertisers

The Onion tackles data privacy:

“As a law-abiding resident of this nation, I have the right to do whatever I want without a shadowy organization recording my every move, unless of course it’s part of an electronic campaign designed to figure out, based on all of my emails and phone conversations, what types of clothes, shoes, and houseware products I like. Then it’s fine.” Sources later confirmed that Landler had posted a Facebook rant on the issue, which had generated a pop-up ad from a company that restores lost PC data.