Speaking as a software author... Move on. There's nothing that you can really do about it other than get a better protection scheme.

I've got friends that put "crack detection" in their software then when they detect a crack, they direct people to a special piracy page with FBI warnings and the like. It does convert sales.

As for if piracy hurts sales? Yes. It does. But it can also help generate that brand awareness that brings in more paying customers as well. Piracy isn't a simple issue, and the type of software matters.

Just move on though. You can't stop BT downloads.

Worse, with "grey hosting" in some countries, it's impossible to even threaten a lot of illegal sites. Again... just move on.