This document provides a list of websites that can be used to build backlinks, including torrent sites, Ning communities, forums, download sites, and blogs. It recommends participating in discussions, posting content, and adding a link back to your site. Social bookmarking sites like Digg, Delicious, and Technorati are also mentioned as ways to gain backlinks through viral sharing of content, even if the material is not newsworthy. While nofollow links won't pass PageRank, they can still drive targeted traffic to a site.