'Your Facebook data belongs to you and you have complete control over it,' that was the line that Mark Zuckerberg kept pushing over and over, both times he testified before US legislators this week. But everyone wasn't buying it. Congressman Ben Luján, a Democrat from New Mexico pressed Zuckerberg on what information Facebook collects beyond what people knowingly hand over To learn more about what information Facebook collects beyond what users knowingly hand over, Luján asked Zuckerberg about something called shadow profiles - a term for non-user data collection that Zuckerberg was apparently unfamiliar with. Here's an excerpt from the exchange: Luján asks: “It’s been admitted that you do collect data points on non-Facebook users. So my question is, can someone who does not have a Facebook account opt out of Facebook’s involuntary data collection?” Zuckerberg responds: “Congressman, anyone can opt out of any data collection for ads, whether they use our services or not. But in order to prevent people from scraping public information, we need to know when someone is trying to repeatedly access our services.” Luján continued: “You’ve said everyone controls their data, but you’re collecting data on people who are not even Facebook users, who never signed a consent or privacy agreement and you’re collecting their data. And you’re directing people who don’t have a Facebook page to sign up for Facebook in order to get their data. It may surprise you that, on Facebook's page, when you go to 'I don't have a Facebook account…
