Bounty campaign is the best place promote crypto of an ico, bounty campaign is divided into , signature campaign, telegram campaign, redit, facebook, twister etc all this help to promote ico
Some ICO campaigns are now running adword on youtube or facebook. This would increase the number of people known to the ICO, and the most important campaign would be the signature campaign on the BTT
I think currently the best place for ICO ads is the cryptocurrency groups on Telegram, so why do I say that, because most of this is where investors talk the most. Facebook has many people still do not know about cryptocurrency, most of them discuss in private groups