I can't claim to be a crypto currency expert. I struggle with the obscure language that surrounds them and masks the structures that underpin the fabric of them, but it is clearly a technology that holds out much hope for innovation and new ways of doing things.
I have recently encountered the Chill Coin that is the currency to drive the Adchill Marketing Platform produced by the Chill Project. This goal of the project is: "We are here to connect Companies with Marketers & build them the tools to efficiently drive users, clients, buyers etc. to Businesses without the High Fees of traditional Marketing." as their project overview claims.
It is early days for the Chill Project but they have launched an initiative to gain a critical mass of people and you can obtain 1000 Chill Coins for free. They also offer free coins for helping them through various ways mentioned on their Facebook Page or in their Youtube videos. There are a limited number of free coins but you can get your first 1000 here. https://chillproject.org/home15162995