AnkitMaheshwari - 4:38 am on May 4, 2009 (gmt 0)

I have an experience for a high PR link however, it was back in December 2007.

For one of my site I had got a PR9 (Home page) back link from a reputed site as we had engaged into a business partnership with them. As a result my Homepage rank went to PR7 without the need of any other link.
This site was completely new with PR9 link as the first link.

We did build some other links for the site but not aggressively as we were ranking well for high competition keywords in our niche. Yes, had done good on-page optimization.

After 1 year in December, 2007 when our business partnership ended with the authority site, they removed the link and as a result we went to PR1 with the next update and rankings were almost gone.