It allows to conduct campaigns with the fine-tuned targeting of the audience of your project in such social networks as FB, Linkedin, etc.
We can get around platform restrictions for advertising ICO's and we know places without such restrictions.
Case: public ICO
Twitter, Linkedin, Facebook — traffic channels
$ 350,000 — total investments into the traffic
$ 0.6 — аn average price for 1 click
$ 80,000,000 — total funds raised for the project