- generation of a GIF sprite in addition to the PNG
- small client-side only check if at least two files are updated
- link to a Yahoo search for "css sprites"
- note begging people not to upload huge files
Only the first thing is a feature, the other three are to raise awareness on what the CSS sprites technique is about. Hopefully it will help people stop uploading 20-30 megs of images in order to create a sprite.