text: New Study Challenges Online Buying Methods (AdWeek.com) AdWeek.com - With 75 percent of Americans online today, the Internet has come of age as a reach medium, and a new report suggests that advertisers need to understand how a Web site's audience builds over time and adjust their buys accordingly.
inputs: New Study Challenges Online Buying Methods (AdWeek.com) AdWeek.com - With 75 percent of Americans online today, the Internet has come of age as a reach medium, and a new report suggests that advertisers need to understand how a Web site's audience builds over time and adjust their buys accordingly.