Personal blacklist. It simply greys out the torrent on browse list, user page, etc. It is mutually exclusive with Wishlist, and adding it to both lists will result in Wishlist taking priority. As of now, the only thing it is useful for is greying out entries. There is no list of blacklisted titles that can be viewed like Wishlist and Bookmarks. Adding a torrent to your blacklist does not automatically add the child torrents.