How do I find high pr rating discussion forums or blogs to manually comment on so I can boost my site with high quality backlinks. My site is in the google sandbox ballerinadiet . org I went from ranking #1 on the first page to ranking #5 on the sixth page to no page. Is it because I bought backlinks off of Fiverr? I didn't know that buying links could harm your pagerank? Can anyone help me get out of it?