I used Storify in an educational setting. I would ask students to discuss certain topics and then we could curate responses. Therefore, the positive impact is that I am able to collect and store these conversations. I can use them at later times to teach about the power of social media or the conversation topic at hand.
I would renew my use of Storify if I found a need for curation. At the current moment we don't have a need for it. However, we often plan client events or conferences and i can imagine myself using it again at those times.