I was a teenager in the days of Napster and LimeWire, when illegal files flowed through the internet like free hamburgers through a freshman dormitory orientation session. I didn't understand the legality of file sharing, let alone the technical explanation of how it worked. Peer-to-peer file distribution has changed over the years. Though I feel more savvy to the legal issues, I am no less dumbfounded by how it all works.That’s why I invited my colleague Ashley Carman onto this week’s show. She provides a brief history of file sharing, then explains how torrenting works in the present. Is it legal? Who does it hurt? Why do people use it? We have answers to all that and more.Subscribe to What's Tech on iTunes, listen on SoundCloud or Spotify, or subscribe via RSS. And be sure to follow us on Twitter. You can also find the entire collection of What's Tech stories right here on the The Verge Dot Com.Learn more about your ad choices. Visit podcastchoices.com/adchoices