Hi there,
I am part of the Nav Coin dev team and I am happy to answer any questions you might have.
If you look at the history of Nav, the original POW mine was years ago and it was not in fact a pre-mine at all. Mining was open to the public during the POW phase of the original coin. All the coin's which I own I have bought with my own BTC from bittrex and poloniex, just like anyone else.
In regard to the market being manipulated, you can not pin that on us. All markets are open to manipulation by speculators, we can't stop that but we don't encourage or endorse market manipulation either.
I would also like to inform you that our anon network ran for 18 months with no issues or transactions traced despite us putting a significant bounty to the public asking for them to try and crack the system.
If you want to learn more about our anonymous system and why its unbreakable, we have just released an article which explains it here:
http://www.navcoin.org/news/articles/post/nav-coin-updates-anonymous-networkWe are re-opening it for use next week after performing significant upgrades which also increase its security.
Feel free to ask any more questions you might have.
Cheers,
Craig.