[?] dynamic loading many objects onto the screen

Hey - I'm not sure how many of you have seen my current project, http://pinitup.net, but I want to know if I can speed up my system a bit.

I've already began recoding to make the scrolling and everything quicker and smoother, but I'm wondering if it would be beneficial to dynamically load the notes onto the screen based on where the window is. I'm currently using a Rectangle object and scrollRect and just moving the movie within the scrollRect. It is pretty fast, but I don't know for sure if having many objects off screen slows it down.

Any feedback would be appreciated.


Jonny