For me it's simply the best pictures manager I've ever seen (and tried).
I'm operating a travel website and 1 year ago I tried loooots of plugins like that and they were all bad except this one. Some were great, but after spent time configurating them they didn't work, so !
I want that my visitors can see all the pictures I published in miniature and then they can click on one to expend. It's so a not really hard job but I it took time for me to find a good one that does the job well and reliably.
I made a donetion long time ago and now I want to thanks them here.
The only bad thing is that for me the image resizer don't work good. Maybe it has been corrected since because it has been long time since I've not try again, I simply reduce my pictures by myself before uploading. It's ok at all anyway !
Thank you !