In response to the ongoing investigation of online marketing practices by the U.S. Senate Committee on Commerce, Science, and Transportation, led by Senator John D. Rockefeller, IV, several e-commerce marketers and retailers have agreed to cease engaging in post-transaction marketing, whereby they would share their customers’ billing information with third-party marketers. Senator Rockefeller’s interest in this issue arose from consumer complaints that third-party marketers engaged in post-transaction marketing do not provide consumers with adequate notice of the additional charges incurred.