Hi there - i bought 30 PR 3 themed hompage links and they had little - no impact on the serps for my particular keyphrase. I am thinking that it might because they all went up too quickly and Google penalized them. What do you think? Or could it be because Google thought it was strange that they were all links from homepages? For future reference would it make sense to have them added say one a day? The quality of the links isn't the best but they are OK. Im pretty sure they should have helped my site more than they have.
1. Were they relevant links (i.e. was the website related to your niche) 2. How many outgoing links was on the page? 3. Did you check if the page/site was penalized
Pr does not only matter.... relevancy also matters. I think you should try to get more relevant links
it's againt google's rules to buy backlinks, tey might realized and that's the reason why they penalized you.