Early technology much like the internet itself is full of risks and pirates everywhere, but eventually things will improve for the better.
The security is the main part of every new exchange.
It is the most sensitive part and we have seen many hacks that have been made these past few years.
I also don't trust much the current exchange, but i leave on them a small amount to trade in alt coins.
I also have very small amount of bitcoin in more than two exchanges. I do not want to rely on a single exchange as I'm aware of the old popular exchange stories. So, it will some what secure of bitcoins if we have accounts in more than one change and having our bitcoins split ted across many exchanges.
I think that it is a good idea to have your bitcoin spreadable in many exchanges.
But not in every exchange, personally i have only in 2-3 exchanges and until now it is good except bter which got hacked.
And my funds are still not refilled, in generally you should ask first in which exchange should we use then research yourself.