I have seen different excel spreadsheets and blogs with articles including Do-Follow blogs with high domain PR. Does anybody know a high quality and free/cheap source for formatted excel spreadsheets that also includes the page PR and niche - and that is updated lately and free from nofollows? I comment on blogs on a regularly basis, but would like to choose the most valuable of them and at the same time bring some quality to them by only involve myself in relevant niche blogs that cover my interests. I'm not found of building links at this way to improve SERP rankings and PR, and that is the reason why I ask this question