ADM serves Car Dealers, Automotive Marketing Pros and Internet Sales Managers
I saw this article on Search Engine Roundtable. It is a short, but interesting read suggesting that google is looking to crack down (yet again) on sites that have been overly optimized. The article suggests a focus on keyword stuffing and unrealistic number of back links.
Here is the link to the article: http://www.seroundtable.com/google-over-seo-update-14887.html
Certainly something to keep in mind in lieu of the conversation Brian put forth on educating your clients on SEO.