I wish browsers, when you right click on an image and select "properties", would show the images EXIF data. People often wonder how an image was done and the Exif data will often tell you what camera was used, what focal distance was, what lense and what the zoom was at, the ISO setting, how long the exposure was, and flash information. And a few other tid-bits.

Like if you go here and click on the "i" just above and to the left of the image it will display all the Exif data under the image.