Abstract: A system for traffic analysis which includes an analyzer, a content source and a user terminal, and an authentication mechanism that allows or rejects the connection of the analyzer in a traffic flow between the content source and the user terminal. The analyzer includes a storage device for storing at least parts of the traffic and a questionnaire generator that uses the recorded traffic data to generate a questionnaire with questions only regarding services or content accessed by the user terminal. The response may include parameter values that are filled in by a user or parameter values that are filled in by the user terminal. Traffic data and response from multiple user terminals can be stored for later analysis.

Abstract: A system for traffic analysis which includes an analyzer (100), a content source (200) and a user terminal (300) and an authentication mechanism that allows or rejects the connection of the analyzer in a traffic flow between the content source and the user terminal. The analyzer (100) includes a storage device (110) for storing at least parts of the traffic and a questionnaire generator that uses the recorded traffic data to generate a questionnaire (120) with questions only regarding services and/or content accessed by the user terminal (300). The Response (130) may include parameter values that are filled in by a user and/or parameter values that are filled in by the user terminal (300). Traffic data and response (130) from multiple user terminals (300) can be stored for later analysis. Procedures and preferred aspects of the invention are also described.