pre-scaling web images to avoid bandwidth bloat
"Am I the only one to bother optimising images for web use? I come across pages with the images approx. 4000x3000 that let the browser do the work of scaling it down to 400x300."
how about Image Magick's 'convert' on the server side?
convert bloat-image.jpg -thumbnail x300 reasonable-image.jpg
should work. could even be done in a PHP or perl CGI. A more efficient algorithm would be to create the thumbnail first (using a similar command), then clicking the photo would open up the full-size image.
but that takes EFFORT. And these bandwidth-stealing "coders" are LAZY.