Not sure how to explain the technique

But this site: URL has an example. On the right side, the buttons are sliced along the path of that background image. If I knew how to describe that, I could search the forums. There's probably a name for that technique so if somebody knows it, I can search away. Thanks.

lol..neither do i
But search for slicing along paths.
Paths being the keyword. Or maybe slicing with masks.

hm.. I'd like to know how to do this too

mee too! waiting for the tutorial...

They aren't actually sliced along it - if you mouse over the white space to the right, you'll notice there's still a button there.

All they do is load the "swoop" layer's content (ctrl-click on the layer). Now select the marquee tool, hold shift and select the area left of the swoop (see attachment). Invert the selection (ctrl+shift+I) and hit delete.