So a few weeks ago I asked a question about this. Seemed like it was a good idea, so I bought the PR8 and it was site wide so other pages were PR7 and such. DA is 88 and it's been a month (well 2 days short of a month) and my serps hasn't increased not even one place. Just to mention the link isn't in my niche or related to my site at all... Should I cancel this monthly subscription or should I wait it out? Does anybody have any other experiences?