The related content widgets could be configured to handle different module views.  For example, when on the main Live Exchange view (all questions list) the widget could be configured to show popular tags (i.e., based on max counts) or popular questions (i.e., based on most votes or views within a specified period of time).  When on the individual question view (viewing content of a single question) the widget could be configured to show a list of questions or tags related to the active question.  There are likely other configurations that would be of interest but I hope this helps clarify the main requirements.  tks!