One of my sites got put under a manual review from "G". Someone had created some "Hidding CSS" on some internal pages to create an unnatural jump in the ranking. My site had doorway pages or groups of cookie cutter low quality pages that dont do anything good for user experience. Google is specifically looking for this and manual reviews are on the rise from what im told. How can someone spot these types of pages on a site? I guess someone that PROMISED SEO SERVICES, screwed me over. Pisses me off. I need to check my other sites. How can I spot this?