Topic title says it all. I'm currently building my Tier 1 backlinks by manually posting comments on PR 2-3 blog type websites related to my niche with my website link in the Name/ID section. They're mainly blogger/blogspot websites with some other blog type sites. I'm finding it hard to find such blogs with auto approval (but managed to find a few). I have at least 3 placed and about 10 awaiting moderation now. Is this method the way to go, or should I be just submitting articles to Web 2.0 sites that link back to keywords for my Tier 1 backlinks?