Our Marketing dept, like many, has little experience with web design and even less understanding of the technical issues involved. Try explaining bandwidth and filesize to a person who absolutely doesn't give a crap--or worse, who knows that their job will be easier if they don't understand. You can only use the "elephant through a garden hose" image so many times before their eyes glaze over and they just don't hear you anymore.

When I got into this biz, marketing and design people looked to the web developers for help with optimization. Now they don't even seem to know what the word means.