I think you are looking for the module hook that calls it into the template correct?
if you look at the share_revenue_init file you will see where it's assigning the module hook.
Code:
module_add_action_tpl('tpl_pligg_below_center', share_revenue_tpl_path . 'show_ads.tpl');
Then if you look at the yget/pligg.tpl file you will see where it's including that hook.
Code:
{checkActionsTpl location="tpl_pligg_below_center"}
Hope that points you in the right direction.