I own a FB page with 1500+ likes, all of which are active and visit the page daily. Every post reaches a minimum of 2000 people in 24 hours and it gets to 3000, 4000, or even 8000 (which depends on the post).
All of the likers are torrent users and people who watch HD movies and shows. Most of them are there for HD trackers, even though a Movie and a TV tracker will go well too.
If you need the link of the page or any statistic proofs, you can PM me. You can even offer invites or whatever content that is HD-Related.

This is a free promo for your HD tracker, no charge no swapping of any favors or nothing. One thing you must give/have is that the tracker is either open or you give me some invites to giveaway.