So I've been split testing my sites for a while, I usually use a different strategy for each batch, so apparently the most self-sustaining way to rank well is to look for sites with High PR from Blogs, Extremely Low OBL, and Low Activity (barely any posts or comments), you build around 30-60 links, then leave it, don't build anymore, and watch it google dance it to #1. Don't use any Web 2.0s or tiers, AT ALL. I generally choose sites that are somewhat competitive, (clickbank products). For some reason the recent algo, I find, doesn't really like ongoing link-builds, because most of the time, things are fads more than they are trends (Pogs or other shit lose their hype). So anyways, that's something I realized with white hat seo. Try this with one site if you want, and see what happens, do your own due diligence!