I've only seen the Bitcointalk announcement and their homepage so far - I'm surprised it's been around since March 2014... I'm still unclear how their own coin enables them to support the people / industries they want to support. It's not like Dash which has a divided block reward so I'm assuming the founders or organisers would have to either mine and / or stake their own coins to generate a sustainable income for them to use. To be honest, they don't need their own coin to do that, mining or staking any other coin, preferably with a larger base of users, would give them that income. This is pretty much how I see PotCoin. I think projects like this are referred to as 'cause-coins' - which is all well and good but crypto currencies need to offer technical innovation to distinguish themselves among their competition. Don't be discouraged though, even PotCoin has had periods of high market activity and HempCoin appears to going through that kind of activity lately. Their success will come from how well they carry though with their goal of funding the hemp industry - and perhaps even lobbying efforts if those are on the agenda.