It allow a very nice and original touch to your website by allowing an unusual way to show some photos. I love especially the random feature : each visit, photos are different preventing visitor to get bored by seeing always the same thing. It's perfect for website mainly focused in photography activities.
Moreover developer is exceptional, had some problems with a feature, I submitted it in official forum, next day : an answer and new extensions version solving my problem !
I'm really impressed by this developer.
To sum up : Stop reading me and download it, it worth it, you get what's promised ! :-)