Thanks for the explanation ... A little bit strange behavior of CMC ... Why should it be less legitimate? For the customers it's better to have no fees.
No fees makes those figures meaningless. I could buy and sell one coin to myself one million times a minute at no cost.
I could create my own coin and instantly be the number one on CMC in terms of volume if I wanted to.
Ahh Ok ... you're right ... now it makes sense for me

... Yes, with this in mind, the trading volume from an exchange without fees is less legitimate.
Thank you, now I got it
