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As you have probably found out: an encyclopedia can never be complete. When I founded informationsphere.com in mid 1998, I started with a handful of terms - now, there are more than 5,700 top-quality terms and definitions within informationsphere.com. We have more than 1,500,000 visitors and almost 4,7 million page views in total. The number of informationsphere.com's Newsletter-Subscribers is over 2,400.