Showing group discussions on the main page?

[Tat Ruck]

Is there a simple way to make discussions and other activity within groups show in the main page forum block (on the home page) as well as in the activity feed?

I think only group members get alerts to new discussions/responses/comments in groups, but would like all members to see these, to encourage them to join the groups, respond etc.  Also because it then reminds me to include this activity in the weekly broadcast message, without trawling through all the groups.   I may be missing something  really obvious ...!

Thanks in advance for helpful ideas/workarounds!