If you upload your photos to flickr.
Welcome to Flickr - Photo Sharing
it will post all the data about thwe picture and you can copy and past it into your post. Maybe you could request in the rules that this information be posted when people post photos.
Example
Camera: Canon EOS Digital Rebel XS
Exposure: 0.01 sec (1/100)
Aperture: f/20.0
Focal Length: 48 mm
ISO Speed: 400
Exposure Bias: -1 EV
Flash: Off, Did not fire
http://farm3.static.flickr.com/2746/...bea9438869.jpg