Let's say that you have an application where your players can submit content in a variety of ways. Perhaps they can submit product articles as well as reviews. You might want to keep track of the number of articles submitted, the number of reviews submitted, and the overall number of content submissions. To do this, you would create three actions: submit.article, submit.review, and submit.content. Then, you would add submit.content as a reaction to both submit.article and submit.review. Then, whenever you report that a player has submitted an article, that will be recorded and r4nkt will automatically record an additional activity: submit.content. Likewise, when you report that a player has submitted a review, r4nkt will record that and it will automatically record its reaction: submit.content.