The image toolkit we use to generate thumbnails and so forth is.. quite poor. If you've tried to upload an image lately you'll see that the whole damn thing just crashes, but fortunately after it's done the work we require.
We used to do image resizing, however they came out like [www.plus613.com
] - as you can see from this example, it's hardly ideal
Until we can find an image toolkit which both works and doesn't rely on using system calls, but is handled within PHP/apache we can't really do this.