You’ve probably heard the old adage “If you’re not paying for it, you’re not the consumer. You’re the product being sold”. And in the case of social media, there’s certainly some truth to it. What exactly are you agreeing to in the terms of service when you sign up for a free social network? What types of personal data is collected after you click “accept” below those barely-skimmed privacy policies?

We already know that the NSA has extracted millions of user records — e-mails, audio and video chats, photos, etc. — that had been collected by social media and tech companies. Whether there was knowledge or consent from those companies is still up for debate. But regardless, it’s helpful to at least know what’s being collected and how it’s being used. This infographic dissects how the 5 largest tech companies — Google, Facebook, Apple, Amazon, and Yahoo — are gathering and using your personal information.