Here is an incomplete list of some of the important connections in my personal web.
Trading Agents Competition: An open competition to encourage research into trading agents for e-commerce to be held in association with the ICMAS '00 Workshop on Trading Agents.
E-Commerce@NCSU: an umbrella encompassing all e-commerce related activities at North Carolina State University.
SIGecom Exchanges: The official newsletter of the ACM Special Interest Group on E-commerce, of which I am the editor-in-chief. The newsletter is purely electronic, and is ramping up to a quarterly publishing schedule.