I wrote something like this, but for photos. I was tired of not being able to share photo albums with my family and friends.

And then I realized that there is a certain group of people who really need a private photo-sharing service without any oversight, and that not only do I want nothing to do with that despicable group, I don't ever want to realize that I helped them in any way.

So I decided to never release the code and never make it available.