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We have been marketing a website for a client with a domain name example2.com. Their main site example.com is used to post information about their services and example2.com is their eCommerce site they use to sell their products. After the Google Penguins update, we have lost all rankings for example2.com. We did not do any unethical, black hat SEO and I am pretty sure its wasn't just mistakenly blocked. We use the same strategy for our other clients and they have not been impacted. Do you guys think the domain name has anything to do with it? Whats odd it example.com is now ranking for some keywords that example2.com used to rank for. We have never marketed that website or anyone else for that matter. I have been scratching my head over this one for the past week and this is the only feasible problem I can think of.