I should have been a little more careful with my phrasing. Your site fits the description of a content farm. It looks and smells like one.

My reference to Wikipedia was to the quality of their articles.

I know they're not exactly the same thing, but look at these:

http://en.wikipedia.org/wiki/T206_Honus_Wagner

http://www.cardboardconnection.com/baseball/t206-wagner-card...

All your content appears to be about this thin, and you have tens of thousands of pages like this. That's what a content farm looks like to me and Google.