Today I will share with you the difference between the two online marketing methods: The first method is to actively add others' contact information. Of course, this is the fastest way to actively add people, because you enter a group, or find a bunch of mobile phone numbers, that is, as long as he has Telegram or Skype, you can add them. In the past, this was the fastest. But in terms of effect, this is actually the worst. why? Because the people who were added had very little intention...