This week I have noticed a bunch of my sites take a nose dive, sites that were not affected too much by penguin or panda as they weren't overly optimized but had decent rankings from basic seo work. Then this week i notice some of them have totally dropped from the first 10 pages from being in the top 5 results. I am wondering why.... I am thinking the only issue with them is they all use the same wp theme, the domains are registered under my name etc, could this be an issue? Anyone seen similar things lately?