I like how it's easy to use, you don't need any technical skills or special software installed in order to make your own rooms using this tool! There are so many things one could do with cluster including business development (meetings), team collaboration/workplace communication etc., but also just plain fun stuff too :) The interface isn't very intuitive at first - there might seem some extra steps here & there when creating new clusters / groups of people - however once everything gets set up properly its really great not having all those tools scattered around from different providers anymore :).