No. We used to use P2P storage (meaning that you had to share some of your unused hard drive space in order to get 20 GB free space). However, thanks to the awesome work by our talented engineers we've managed to compress all files by an astonishing amount. This enables us to store all your files at our extremely secure data centers with minimal infrastructure costs. We therefore decided to make our service even more more awesome by simply removing the requirement to share any hard drive space. You now get 20 GB for free at an extremely low cost and don't need to share any hard drive space! Pretty neat huh?