I love that it's super easy for my students to use! There is no complicated code needed as far as adding links or images goes (which makes sense because they're already making their own content).
It doesn't have any analytics built in which was something we were looking into purchasing but didn't end up doing so at this time. We will be using po.st more than once per semester when our class does an activity/activity with other classes from around campus about social media marketing through Instagram stories.