Sends a PM to all users online, no admin needed
tested on bithack.lv and outlaw.lv, maybe someone could tell me a torrent site I would need to test my program in?

Price $2. No reviews, just tell me sites to test it on, and go online there If you'll recieve the message, you'll know - It has worked. I'm pretty sure it will work on most, but definetly not all torrent trackers.