I like that it shows your photos in an order you have set up, so when someone clicks through to see more of them they are automatically shown as if there was no sorting at all! It's great for people who don't know how much time/effort is required by photo editing software etc before uploading their images online - but can also be used afterwards too should anyone wish (I did).
The only thing i dislike about this program compared other programs which include'sort' options or categories within each image folder would seem easier than having 2 different sites linked together? This way we could use one site instead of two separate ones just looking similar & linking between both.