Today, I have just checked my site's page rank and it has drop from PR3 to PR1. I checked it before three days it was PR 3. I am Shocked to see that but the good things is that site is still ranking in Google top 10 for targeted keywords. I didn't get it. What happened ? Any thoughts ? Please don't tell me that i have Duplicate content or back removed because i have checked both and everything is ok. I also have been noticing back link increase & decrease in "Google Back Link Query" for the last one and half month. What all you say about this?
Forget PR, it has nothing to do with our business (except link sale ) just concentrate on your website content/visitors.
Have you sell any links with dofollow or write any paid post with dofollow link recently? It might be the case of your PR drop.