I think it is not good for trading because there is no large volume compared to other ones. I also think it is not safe to hold coins in cryptopia.
I agree its not safe to hold coins on any exchange period and for my top 100 coins i dont. But when trading fractional btc amounts of bottom 500 coins...having wallets for each of them isnt worth the hassle.
I already wrote off the loss if i never get them back or off the exchange...cost of doing business in the lower 500..then again i was around for mt gox and nicehash so its nothing i dont halfway expect.
Just like my holdings on c-patex and coinexchange...little amount of worthless crap that hopefully hits. They are all profits and if i lose it all, Im out very little/no principle.