On-line purchasing of products from an electronic commerce (e.g., a Web page) seller is improved by providing samples to users at little or no cost in exchange for feedback that is provided to other users considering purchasing the product. A subset of products available for purchase from an electronic commerce site are provided for a sampling program to users. A predetermined number of users are allowed to sample the product. Feedback from the users are solicited and tracked to provide additional information to the seller and/or potential purchasers.