I've been thinking about ways to make pixeldrain more interactive, but I also want to keep the privacy.
Adding Disqus comments to every file would be a great way to talk about files or leave notes about how to use them. But it would also mean the file will be exposed to Disqus' commenting systems.
Another option I've been leaning towards is a realtime anonymous chatbox for every file. You could choose if you wanted to use your pixeldrain account as username or just stay anonymous. That way you can discuss file contents without revealing your identity.
Both options would be easy to implement for me. The chatbox might need a bit more attention but I'm up for a challenge.
Let me know what you think, I'll be interested in hearing your opinions.