I'm making a piece of software right now, and I'm just doing it in my free time, so I'm not too serious about it. I want to make a version of the software and put a tracker in it that interfaces with Google Analytics. That will allow me to track things like country of origin, OS information, and hardware specs. I won't be able to see anything that is personally identifying or be able to single any one user out.
Anyways, I want to upload this modified version of the software to Pirate Bay, just to see what percentage of my users are pirating my software. I don't want to go after them, I don't really care that they're pirating it. I just want to see if there are any demographic differences between piraters and non-piraters.
This brings up privacy implications. Do I need to disclose that some sort of tracking is or may be happening in my software? If so, what do I need to disclose?
I live in the US, but since it's online software, people from other countries are bound to download it. Is there anything I need to do to account for that?
UPDATE:
I didn't realize that by uploading it myself that it would make this no longer piracy, but it doesn't really matter for my purposes. I have no intention of coming after these people. I just want to gather some data on piracy for my own curiosity (I know this seems weird but I'm fairly laid back about this piece of software)