I started Acepilots.com in 1999. As of late 2012, it’s still going strong. It includes biographies of famous aces & aviators and descriptions of many great airplanes: American, German, British, Japanese, and Russian. I recommend it to anyone interested in those topics.
Over time, the site got too sprawling and unfocused, so I trimmed it back to its core content, and moved some secondary content here, notably some summaries of forum discussions, and a large number of profiles of older planes.