I am Alice. I like We chat. It is fast, convenient and fashionable. And you can use it for free. It can be used in my mobile phone. It has hold-to-talk voice messaging function. I am a fan of Leehom Wang. Through We chat, Leehom Wang often says something to me. It's amazing. I am David. I love Micro blog. I update my Micro blog when I am free. We can share instant  messages with each other. I often look through Yao Chen's Micro blog. She has many followers. I make many friends with them. I often write something on my Micro blog, for example, "I'm in blue today. I didn't pass the exam." Then many friends comfort me. I share my birthday party, my new phone, my new coat, etc. with my friends. It is fun. I'm Lily. I don't like We chat or Micro blog. I don't believe them. There are so many crimes  on We chat. Many people are cheated because they believe in other people they meet on We chat easily. It is not a real world. As to Micro blog, I don't think it is a good way to make friends. And you should write something no more than 140 words. I like keeping diaries. I don't want my secrets known by others. I am a low-key  girl. Why doesn't Lily believe We chat?
Because many people are cheated on We chat easily. Because she doesn't like to say anything to her friends. Because she doesn't think it is a good way to make friends. Because she prefers keeping diaries to showing secrets to others.