I bought a genuine 3 year old PR8 domain and put up an autoblog with WPRobot & WPUnique and within a week, I started getting 1500 uniques per day. Then on a day I added my Adsense on each page and next day - BAM - my PR8 website is fully de-indexed by Google. Can anyone plz help me get this PR8 get re-indexed ?
What most likely happened here is you alerted Google to your Autoblog and guess what ...? They don't like them. So you let them know by setting up that AdSense account and placing the code, now your stuck. It has the potential to become re-indexed, but I will just have to say Good Luck!
It seems to be really difficult to go back to its original position. Try having more organic links and quality content on blog.
Sorry, but Google wants their customers to have a great viewing experience. Autoblogs post other site content and in Google's eyes bring no value to searches. I learned that the hard way and now only post unique content.