Being a student learning English, I want to say that I can't live without English. But saddly, that will be a lie. Then I'll search for it except for my family,and friends. Because they're so essential to me and they are related to abstract feelings. Then I can pick the Kakao Talk. It can help me note memo, call make free calls, read articles as well as chatting fuction chat . It is the as efficient as any other program to me.