Andy...
in addition to the slide show on a DVD or CD, I may put together a scrapebook with, who knows, a few 8x10s in addition to a set of 4x6 prints...so full size digital images of 1.4MB or whatever will look much better in print than say a 150kb image that would be available on the web page.....so when folks send you the image, which may be resized, they could just email me the full resolution pic.