modxTalks для MODX Revolution
Comments system modxTalks is builded on CMS/CMF MDX Revolution with realtime features (I mean AJAX) for boosting user discussions on your site.
In several steps you can add comment system to any page of your site which will attract new satisfied users.
You can use modxTalks wherever you like - from simple blog to huge portals. This is one of the methods to maintain community around your site.