What you have to understand is that people who have been using Photoshop for awhile, usually pick better compressions to minimize compression flaws in the image. The more you take it down, the more artifacts will appear and it will make the image look terrible. My screen Resolutions are smaller (typically 780X585), and even still on the lowest compression setting I can go without getting compression flaws, they range from 300 to 500 kb (the latter being the limit rendo allows) Also keep in mind color has alot to do with that too. For some reason, Reds and Golds tend to make it even harder to compress things, as they result in a bigger file size.