Right, a friend told me about this many years before. She worked on the networking infrastructure and knew what it was being used for. I didn't think much of it at the time and I thought it was common knowledge. When the Snowden "revelations" came out it, I was surprised that this was considered news. I understand that perhaps there wasn't an official website laying the whole thing out, but at a minimum it took a lot of people to set up and run and I really don't think it was ever terribly secret to begin with.