0 volume for most coins there.
Share deserves better exchange sites.
Decentralized exchanges are coming soon, they will suck all traders from website-exchanges. NXT is going to launch their "DEX" soon, you can then trade coins inside your own wallet/client with very small fees and not need to fear that website is shutdown/hacked and stealing your coins. And NEM is also doing their own "DEX". That would be a huge thing for Sharecoin to make it's own "DEX". But might be a hell of a task... Maybe in the future ?
There was Ripple (XRP), it existed for years and still doesn't draw much attentions: https://ripple.com/
Later there was MasterCoin: http://www.mastercoin.org/
And recently, there was CounterParty: https://www.counterparty.co/
You may want to go through all of their wiki to see how is this decentralized exchange actually work.
Decentralized exchange may sound good, but it's actually not as convenience as a centralized exchange. That's why those protocols were hot for a while when they launched and later on, no one cares.
