I'm still playing with this so I don't know a lot about it but it is nice to be able to see a lot of pictures all in one place. Coming up within the next few weeks we are supposed to be able to click a button and select images from our own galleries to place into posts.
The SMF Gallery is at http://www.smokingmeatforums.com/gallery/
The SMF Gallery is at http://www.smokingmeatforums.com/gallery/