It's Redacted.sh, a.k.a. RED. They have around three million torrents. But like What.CD, Redacted.sh is a private tracker, so you can't just jump in and see the content.
It is worth noting that RED is particularly difficult to get a decent ratio on. Spend some time googling reddit posts, there are plenty of examples of people not being able to build solid ratios due to competing with scripted bots.
Another comment mentioned Redacted.sh as a successor. I haven't used it. I'm sure there's a subreddit around that can help. Looks like orpheus is another option if I'm reading correctly. You have to get an invite or pass an "interview" though, so be prepared to wait a while.
