When is the least expensive time to go to N.Y.C?

I'm hoping to go sometime next year ( it'll take me that long to save up the $). I would like to stay for a week, but a weekend might be more affordable. How do those travel sites ( orbitz, hotels.com ,etc.) work? Which one has the best deals? Thanks you so much for any info that you can give me.

Girl, what chu talking about? NYC is expensive PERIOD.