BcBlair: you can optimize images like this:
Photos always JPEG. Try different quality levels
and find a setting for low file size and appropriate quality.
Icons, Text, Business graphics always GIF.
GIF89a allows up to 255 colors plus transparency.
Never dithered (for more than 255 colors) because then the
file size increases dramatically.
You cannot give JPEGs to someone and ask him to optimize.
JPEGs are an end product. The JPEG compression (Save as JPEG)
can be optimized. ---Gernot