Hi Folks, do you know how to build link building service? recently I'm looking at fiverr and there are so many people offering link building (wiki, social, pr, article, linkwheel, blog comment etc) but how can they do it? I'm interested in manual blog commenting, but when I read to do manual blog comment I need to find high PR blog. I tried to find blog with high PR list here, but couldn't found any. any clue?