Discus - Try the working demo . Advantages Interaction provides positive group support. There is an authentic context for writing. Users can decide which issues to initiate and when to participate. A positive evaluation is achieved when other participants understand you.
Motivation is fostered when understanding is achieved.
Self-confidence results when participants have common interests. These positive outcomes promote a desire to continue learning. Independence in learning is rewarded. Users become familiar with questioning strategies for clarification, correction, and expansion of ideas. Disadvantages Interaction requires an ISP that is up and running.