If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.
If you like the NC/2 as I do but need to shoot polaroid you'll have to locate the later NC/2 /100 version. It looks virtually identical but has a slightly higher rear section to clear the pola. back. As you're in the US you might try KEH. They occasionally have one. Good luck.