I would like to ask about one of my sites. I have six directories built around keywords. Each has a page for each zipcode directory. The www.buyers-agents.org was the 50,000 most visited site for sometime and has about dropped off the map. www.realestate-411.info is a similar site geared around "real estate" rather than "buyers agents". Is the duplicate content on the pages (only difference is town name unless someone registers a town)? Any thought would be appreciated.