Jeff Leve, a wine enthusiast who has been tasting, collecting and traveling to wine regions in France and in America for over 15 years, has launched his website : The Wine Cellar Insider.
It is updated in a very regular basis with new tasting notes and wine news, and is very rich in information about Bordeaux regions and Châteaux : history, vineyard, equipment, and other key facts.

Have a look at the Château Palmer's profile : http://www.thewinecellarinsider.com/winery-profiles/bordeaux/margaux/palmer/