How I Use It
I have used this tool as part of a "literature circle" assignment, which was based upon student-lead independent reading groups. Although it did cause student to interact with each other about their reading, it did not reinforce the habits of reading critically (which are essential to true engagement and meeting the Common Core Learning Standards). There are better tools out there that allow for the same things as this app, but also allow for deeper interactions.
This application is like a readers-only Twitter account. A good tool to get students into the habit of reading within small groups, but lacks the capabilities to allow students to engage deeply into what they are reading.