Use image filtering system to improve result quality
Picture Ripper software is a picture downloader software that lets you define desired image file size or picture dimensions. This allows to filter out almost all banners and images that are the part of the web site design and are not what you would like to have in your growing image collection.
Keyword filters are cool way to speed up the crawling process
You may dramatically reduce the wait time by using specific keywords, such as parts of image addresses and link titles. This will tell picture downloader what kind of pages to visit and what pages to ignore altogether.