coins are a bigger fool scam. buy it, wait for a bigger fool to buy it from you for a higher price. bitcoin is just the biggest one by far. of course if you don't know how cash works or you have to buy thiings online, you could use it for illegal purposes but seriously coinbases are just for crime, scams, and a few nerds just excited about the technology. you can still invest in it though, it looks like it holds steady against the dollar as a credit union
United States