Abstract: A system and a method for measuring and monitoring effectiveness of on-line advertising are provided. The system and method provide a code attached to, for example, an advertising banner of a company that may advertise goods and/or services of the company. The code provides a signal to a server when the banner is viewed on a computer of a user. Cookie data is transferred by the server to the computer of the user providing information related to viewing of the advertising banner. Surveys are further presented to users to obtain information related to the effectiveness of the advertising for both exposed users and control users.

Abstract: A system and method are described for presenting on-line survey invitations to users over a network. The system enables selectively presenting survey invitations to users in accordance with a survey recruitment definition associated with a tag embedded within an on-line advertisement downloaded and executed on a user computer. If a determination is made by a survey recruitment server that a requestor is to be a potential control (unexposed) survey participant, then instructions are issued to the requesting user computer to obstruct presentation of the on-line advertisement which caused the issuance of the request for a survey invitation from the user computer.