Great post, thank you very much for the input! We are also on the exchanges Coins-e, Coinex and Cryptokopen, as listed on the cryptogenicbullion.org homepage. We are also actively working on getting CGB on other exchanges at the moment. I agree 100% that is a very important aspect for the success of a coin. I personally have not ever heard of Mintpal before and never cared much for poloniex, but will send both exchanges emails ASAP. All help is appreciated, the addresses are
support@mintpal.com and
poloniex@gmail.com 
Well, I am not endorsing either exchange, I am just saying that while Mintpal is new, they have attracted a lot of business. I do like the exchange (so far) as well, but the reason I mentioned it is that a community can get on there with enthusiasm -- no fee required.
So, you can email them, I guess, but there is a voting tab right at the top of their homepage. Just hit that button and you guys can vote and will see all of the results as well.
Of course, every extra exchange is good, no doubt about that. Yes I did notice the voting tab, but if you look carefully you will find that they forgot to put CGB on there