Classifieds spider

I have an existing classified website. I need a web spider which can index other classifieds websites based on keywords per category/subcategory. Indexed classifieds from other sites must be placed between the existing classifieds placed directly on my classifieds site. An image and title must be shown in the list. Using exact same lay-out of my website. Thru admin the classifieds spider must can be managed: - multiple classifieds websites (or domain extensions eg. only .it) to be index by spider, must can set - multiple keywords to search for per category must can set ? - a reference label for external classifieds must can be set, being a classifieds for site X must have a label “found on x?? ? The spider must index first, image, title and description of the classifieds and present it if I where placed directly on my own classifieds website. External classifieds are labelled as set in admin area.