Facebook has launched a new function of its comment system, which now may become integrated into third party websites. This a another immersive web application of similar importance like the well known sharing functions and the single sign on system. This step may become most important as social comment systems are very popular. An example of the importance of social comment systems has been given by the article about Disqus, which has a reach of 200 million monthly users. Some further information including screen shots is given by the following article.