Rated 5 out of 5 stars

Please add a file naming option like this
"PageHost+ +PageDirs+ +ImgDirs+ +ImgName+.+ImgExt"

like you can find on the "click and save" extension for chrome where it saves the images under the name of the url and file name together

This review is for a previous version of the add-on (0.9.5.1-signed). 

If you go into "Options -> Save -> Folder Options", there is an setting to "Append image URL folder structure to save folder". I think this will do what you want.