I recently decided to expand into building a decent sized (or large, depending who you speak to) PBN. Hoping at least 30-50 sites. How are they working for you? is it worth the large investment? Did you see a drastic change in your rankings based solely on your PBN? (I do other SEO, but need to know if this is what will cause a great ranking increase) I have sites that I cant get to rank too high due to competitors just basically being better than me. Hoping a Pr3+ PBN will help give me the boost.