The Telecommunications Knowledge and Extranet teams come across many Web sites every day. In the right column are some that we would like to share with you because they are interesting and, we hope, potentially useful. We would like to invite you to share some of your favorite Web pages with other Extranet members — please e-mail any suggestions to telecoms@mckinsey.com.

Disclaimer: Please note that a listing of a site does not in any way mean that McKinsey & Company endorses it, nor represents its contents as its own views or attests to its accuracy.