I have recently migrated a site from Dolphin to JomSocial and needed to modify the way that the activity stream was displayed to visitors. By default the replies and likes of activity stream posts are only displayed to friends of the original poster. This means that the comments are very limited in their reach.
The overall effect of hiding activity stream comments and likes from guests is that this valuable activity is wasted. I wanted to show this activity to guest visitors so that they could see how active the site is. This in turn encourages them to join and hopefully encourages them to comment.
Of course, this may not be suitable for all sites, but in the case of this site, there was no activity that is 'secret' or 'private'; the activity stream is public viewable, and so should be the comments.
The modification you need to do this is pretty straightforward, it simply involves removing or commenting out two lines of code....