add to newsfeed/timeline new join users
Using Jamroom
The way Jamroom works 'by default' is that on their profile pages, users only see timeline events that are pertinent to them - their own actions and the actions of the profiles they are following. This is done with a template call something like this -
{jrCore_list module="jrAction" profile_id=$_profile_id include_followed=true order_by="_item_id desc" simplepagebreak=12 page=$page_num pager=true pager_template="timeline_pager.tpl"}
Note that it includes the 'profile_id' and 'include_followed' parameters to make it specific to the profile. If you were to remove those parameters, the timeline list would be 'global' and show all site timeline entries for all profiles, including new signups (should that timeline action be enabled (see my post above)).
A global timeline would be better placed on the site homepage, in my opinion, but if you want it on your profile pages then go ahead and remove those parameters from the profile_index.tpl template.
A better alternative might be just to create an additional box on the profile page that just shows the latest signups. Do this with the template call -
{jrCore_list module="jrProfile" order_by="_item_id desc" limit=5}
hth