Kudos to you, but I would probably be wary of admitting to participate in the illegal book piracy scene unless your pseudonymity is really tight. Thanks a lot for helping out, though.

I did something similar: OCR'd a book, then translated it to another language to make it accessible for a friend.

However, I also contacted the author, and sent them a copy! At first, they were furious - I'd even translated ('pirated') the copyright notice...

But things settled down, and now I'm working with the author on translations to various other languages. It's given the book a whole new audience!

Without knowing what book it is who would sue? I doubt the FBI is investigating random HN comments for literature piracy.

There are companies specialized in this field who will track down offenders then make a deal with the copyright owners.

I'll let you know, but I'm pretty confident I'm safe.