Grab Group forum feed

I was wondering if it was possible to add a RSS block to the group view page that would display the last x number of forum topics/posts?  If I add a RSS block with {SiteUrl}forum/groups/?action=rss_all it will display the latest forum posts of all groups.  Is there a way to limit it to the current group the block is on?  I have tried a few ways and they failed so I thought I would ask here.  Each group's forum has its own RSS feed; so I thought perhaps there was a way to do this using the RSS block.

It's a good idea and I always wondered why it could not be done...It's as if the thought is never about using your own site content...

I think it would help to make the groups more interactive.  When you visit your group page, you could see if a new topic has been added or if a reply has been made.  I might have to revisit just reading them from the database using a PHP block; lots more involved.