35. The system according to claim 11 , wherein said bit-stream similarity evaluation module is adapted to calculate two or more progressive similarity scores each with respect to a different instant during the progress of the real-time conversational media session, wherein each of said scores corresponds to the similarity between the significant attributes associated with the real-time conversational media session data available at the corresponding instant and the reference data, and said evaluation module is adapted to evaluate progressive similarity between the real-time conversational media session data and the reference data based upon the two or more progressive similarity scores.
36. The system according to claim 35 , wherein each of said two or more progressive similarity scores is sensitive to the amount or the extent of media data available at the instant with which the score is associated.