Something to keep in mind when using the save for web option in Photoshop and Paintshop Pro. When you save via this method, your file loses the EXIF data. This data can be a great reference/resource to other photographers, as it contains the setting and details used (by your camera) at the time the photo was taken.

You can use a freeware program like
Opanda EXIF viewer
in either Firefox or Internet Explorer to access this information using a right mouse click over a given image as in the example provided.