Webmaster Tools sent you the following important messages about sites in your account. To keep your site healthy, we recommend regularly reviewing these messages and addressing any critical issues.
My Website: Thin content
Google has detected that some of your pages may be using techniques that are outside our Webmaster Guidelines.
As a result of your site having thin content with little or no added value, Google has applied a manual spam action to www......./ . There may be other actions on your site or parts of your site.
This site has about 36 pages of content - all product based. I talk about the particular product, what to look for, how to tell if the product is quality, etc.
I don't know how much more to write to overcome the 'thin content' problem. Since this site is about many variations of a certain broad product, I am sure I cover the same 'what to look for' pointers in several articles. Although I try to approach them differently, etc. Nothing on this site is copied or has been published elsewhere.
What do you suggest I do to beef it up before resubmitting to Google?