Dave Crocker is a consultant on the design of network-based services (bbiw.net), based in Sunnyvale CA, US. He's contributed to Internet technology and standards since 1972, covering knowledge management, email, instant messaging, facsimile and EDI, as well as Internet security, ecommerce, domain name service, emergency services, and even some TCP and IP enhancements. Dave is a co-recipient of the 2004 IEEE Internet award for his work on email.