Get an real idea of the activity for a game by using a graph showing for example the number of message in the last 30 days. So you can immediately see if this is a very active game or a slow one even if the narrator has not updated his description. Here is a good example from a French forum:
http://www.liber-mundi.org/index.cfm?Param=TTpcQS0nRTYgUEBKRzg5RjpeWFYxRF5FTEc5Ljo9JjIuTD5QPUA7VihEWFk1QlpSUDY0JiozOV5YTSEmXgorRikuRk8kRShcPik3N04wIAo%3D&ChronicleLoaded=False&CFID=6844852&CFTOKEN=2800f6431dabf440-F0BE6E07-0508-7080-07FF1A77D60CB3E8

You could also have other useful indicators like the number of words per message, or the number of active characters...
This would have the advantage to be constantly updated reflecting the current state of activity and not the one desired at creation.