As far as I know, one shouldn't respond to DMCA. I mean, if someone receives email from them, you shouldn't reply to their email or send any other email. Just take any material like it's nothing. Please anyone correct me if I am wrong but I know one has to be careful with DMCA complains.
You don't need to deal with them directly. Basically, the term DMCA refers to requests to remove content due to copyright infringement.
When a DMCA notification is received (from credible identities or the author himself), in order to avoid problems the content must be removed. This is, of course, if this retaliation is true and credible.
By the way, today I was digging into satoshi's posts and noticed this thread: Idea for file hosting and proxy services. If satoshi is alive, he must be proud of you for creating a TalkImg. Your product is different but still would make him happy, I bet.
I'm sorry I didn't read this topic years ago. I certainly would have launched this project sooner!
