From the developer:
"BulkLoader downloads files bulk! BulkLoader can download a series of sequentially numbered files at once, so you won't have to open them first in a browser. More and more tech documents, PDFs, images, online photos etc. are just numbered files without thoughtful filenames for each file. If you want to download a complete online photo album, you'll find yourself opening each picture one after the other in your webbrowser -- a truly time-waisting thing! BulkLoader puts an end to this sillyness and downloads all the files you want one after the other automatically."