This document discusses how web buyers are changing the catalog marketing industry. It notes that over 50% of orders come from the web for some catalogs. There are two types of web buyers - catalog-driven and pure web buyers - who respond differently to catalog mailings. The key to managing web buyers is to segment them by channel and optimize communications based on their purchasing behaviors, such as suppressing mailings to web buyers who are unresponsive or below the breakeven point. Cooperative databases can help segment and optimize web buyers to improve response rates and sales.