The new "instant alpha" feature of Keynote '08 (as well as the other iWork '08 apps) can be used to make transparent backgrounds in images, but copying and pasting the resulting image doesn't work as expected. Either the original image is copied or the transparency is replaced with a white background.Ken Drake at Keynote User has a simple workaround. Place a shape with "no fill" (eg an invisible rectangle) over the instant alpha's image, and copy and paste both image and shape.To create a png file with the transparency, I opened iWeb 06, created a new page, pasted the image and shape, and exported to a folder. In there I found a droppedimage.png, complete with transparency.

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