What are the 2nd tier sites that you use to build backlinks? In other words, I'm working on my keyword research right now, then I'm going to write between 8-10 high quality unique articles and post them on sites like squidoo and ezine. These are the sites that will link to my main site. I will spin those articles with backlinks from the spun articles to the sites that link to my main site. I guess I actually have two questions: how many levels of sites do you use to create link juice, and what sites do you usually link to your main site? Thanks!