first of all, I think, it is one of the easiest way to see how students think differently about technological devices that are used in language learning. they can both share their ideas in a specific topic and give negative or positive feedback about their peers' ideas. for example, when I give a statement like ''how can we use technology to teach vocabulary?'' I can collect data about their learning style and shape the lesson according to their needs. it seems a useful tool, I want to use it while teaching.