Its give you super fast user intereaction..its user interface is too much good thats why I like it most, .you can reply even you are using other applications.and we cam make groups, pages, many more in just one click.it gives you the updates about your recent activity and you have chat recently.if you are using messenger then you don’t need to go on facebook because you can directly access your friends from here.you can send friend request also from here.we can also make audio and video calls.these too good that we can do it by skype.so we dont need the skype right now