Finlay McWalter wrote:
Is there a ceiling on the size to which an image may be upscaled?
If you scale an image larger than its actual pixel size, the image isn't thumbnailed to that size; rather the larger size is simply put on the <img> tag's width and height attributes, so it displays larger in the browser.
This might be annoying, but won't eat up server time.
-- brion vibber (brion @ pobox.com)