Well i believe that bounty campaign is really a great way to make the project become more popular in crypto feild, but it is not enough,that is why some project use social media campaign so that many more invetors can see it and get the information about thier ICO or ITO i see that social media is also an amazing way in promoting projects because social media is now the best way of extending news and many people really used to get more information or news about the world.