Mike Cheverda's Profile

This tutorial was very helpful for me! Few weeks ago I've been working on activity feed myself. Any ideas how to aggregate activities to look something like 'Mike followed Ryan and 6 other developers'? Also my trackable object are polymorphic as well. Comment belongs to commentable models, Follow belongs to followable models. So it would be great to show follows and comments based on their polymorphic parent models. Is there any good solution? Thanks!