The site in question was quite clean. I have other sites that weren't as clean that didn't get affected. I have been testing a link exchange on another site and it requires a links page and it looks horrible from a link quality perspective. The links on the link page include get rich quick schemes, SEO systems, weight loss, ebooks, and lots of things unrelated to my topic (although it originally indicated that links would be relevant). The strange thing is that it works....at least for now.