Most people might of heard about Bitcoin but I think the vast majority haven't thought about using it yet. When transaction speeds are fast and cost very little, I think it will be easier to market. Hopefully, that will happen in 2018 and we will start to see mass adoption. It might help that most of the fiat currencies are struggling and devaluing all the time. At some point, it might seem riskier to hold fiat money and that might push more people into cryptocurrency. Governments might not like it but perhaps they will see it as a way out of the huge debt crisis that seems inevitable right now?