Most likely done before but...

Maybe have a regular weekly/monthly topic on a feature provided by Poser, eg fitting room, rigging etc so that people are aware of what Poser can do and how it relates to other products out there

Cross forums - invite another forum in to discuss their interests and how it relates to Poser, eg photography (textures) or Blender, Wings, Zbrush etc,etc

There seems to be a distinct lack of women posting in the forums these days (with a few exceptions), if this is actually the case then maybe something needs to be changed on this too.