Isn't the D3 shutter life at 300,000? D300 = 150,000.
I know past firmware upgrades reset the shutter count for many Nikons.
In fact I just inputted a false shutter number to prove my point ;^P
It's great that someone posts a site to track. But there will always be hoodlums who ... oh wait - nevermind ;)
Just topic seems just like worrying about how many miles you will get before you have to rebuild your car engine. The answer is - you will replace it before you ever get close.