If you need a gallery for your users that is just stupid-dumb-easy to use, THIS IS IT! No fuss, no muss, and users have no problems using it. There's no crap-tacualr polls, ratings, comments, etc. just a gallery, that's it. PERFECT!
And super-easy to control from the admin! Perfect for any site that has noob-users, or that have a user base that does not need all those extras found in 99% of other galleries.
Did I mention it was easy? :)