QQ just a sham when it first appeared,everyone just regards it as a tool for talking.And only a few people use it to talk with family best friends.But now ,more and more person begin to use it,especially teenagers and businessmen.Also more and more bad things appear,such as cheating.We don't know if our QQ friend say the truth or lie,but we can always be happy when we talking with them .Just because we don't know the one we are talking with,so we don't need to worry about what he will treat us.I don't like this , it's a sham.