Often, but more exchanges are not magic bullets for higher volume. Bigger exchanges won't just add random coins it's a lot harder to get them to list than people seem to thing, while other low volume exchanges most of the time are half scams, they try to get stupid amount of money to list a coin, because they can't make enough on trading fees.

Also, I'm not sure what is with btcma, if you real his post history he is obsessed with the idea of new exchanges, especially chinese ones.