USD still popular over high popular is compare bitcoin
you wrong is compare, maybe compare dollar paypal , dollar perfectmoney dollar okpay is right placed compare
is comare USD not equal, USD real curency in the world , bitcoin digital curency
I have no idea what you are trying to say but for me I think USD is still better currency in compare to bitcoin as it can be used anywhere to buy anything.
thats not true, in my opinion bitcoins are way better because it is a decentralized currency that is not controlled by governments