xsn is trading at zero on ABCC.  That's the fact.
i've looked at Coinall and i don't see much buying there.  It looks like there's almost no action at all, and i compared it with Eth for example and i can see that Eth does have action.  Which explains to me why CMC doesn't count the volume from CoinAll.  It looks like bullshit. 
The only exchange i see doing any real trading for xsn is Livecoin.