So after months of success with many sites using very easy to implement methods (mostly article directories) the gravy train has ended. Like so many others here my old sites have been demoted and im finding it impossible to rank new sites with any kind of mass link building. For this reason i'm looking into using new, more white hat techniques. my new idea for ranking sites is to create either wordpress or tumblr blogs for a particular keyword phrase i want to rank for. Optimizing on site as much as possible and then building only quality, high pr links manually. Maybe between 30-50 links. What do you guys think of this approach? Also has anyone else had success using a similar approach?