"AwarenessNet" is a real-time recommendation engine. In May 2003, an experimental service using it was begun at the online bookstore "bk1" (http://www.bk1.co.jp/) operated by Book1, Inc., as a joint experiment between Book1, Inc., NTT East Corporation, and NTT Information Sharing Platform Laboratories. AwarenessNet can give real-time recommendations about products and information to individual customers based on an analysis of their access or purchase log, even without personal customer information such as interest categories.