Communication Network — ICQ. "The latest version of our favorite instant messenger finally bridges an important gap: community chat." "Community" is selectable.
The Entrepreneur Network — Ed Zimmer's page. Ed is retired but a gold mine of wisdom. Marketing and business in general.
ThinkUSA — Murray Ansell. Links markets and technology world wide. "…services includes market research, market-entry strategy development, product development, and arrangement of both manufacturing licenses and distribution agreements."