October 21 1999

1to1 Magazine's Weekly Digest delivers the latest insights, best practices, and expert opinions on the most vital issues and trends in customer-based business strategy. Edit-in-Chief Mila D'antonio and our entire team of seasoned editors scour the market to uncover the trends that will mean the most to you in maximizing the value of your customer relationships.

In this Issue:

I Know What You Read Last Summer Collaborative filtering technology is allowing companies to create purchase circles. With these purchase circles, shoppers can associate a face (really, a group of faces) with their recommendations.
California Trumps Club Cards Club cards also carry a risk of promotional saturation and margin erosion, as customers sign up for competitive cards and the programs themselves are reduced to a form of sophisticated price competition. The only way out of this downward spiral is...