I got PR 4 for my site and was 5th position for my keyword. Now google ban me. It shows Pr4 but it disappear for 15 days in google search.I didn’t get visitor in this site. (I check Pr by http://www.prchecker.info/check_page_rank.php) In bing, yahoo search it is still in position 5. Google not only ban this site but also ban other addon sites which were in same primary domain. They ban all sites except primary domain. I created 8 pags website with 200 backlinks.It is 4 months old site. How can I recover it?Is there any solution?