i wrote it in WebmasterWorld before and will do a second time.
High targeted sites ( not SEO optimized but widget targeted ) did take a huge hit. These are sites that will care about their products und will give you the searched information/buying place. Most of these site do have different version of this widgets, like color, lenght, height.... But instead of rewarding this sites, google rewards the simple selling sites that only have one or two of this widgets. I think if your site is to homogene then it will be catched by panda/penguin because it looks like spam.