A method for a presentation of auxiliary content, the method comprising the steps of: receiving the auxiliary content; providing at least some of auxiliary content images from the auxiliary content to existing image processing components, including an image crawler component, a feature identifier and a similarity detector, that were utilized to process images that were indexed by crawling network-accessible content, wherein the auxiliary content is provided directly to the image crawler component instead of having been crawled for by the image crawler component; receiving an initial search query; identifying images for an initial set of search results that are responsive to the initial search query from the images that were indexed by crawling network-accessible content; identifying auxiliary content images, from the at least some of the auxiliary content images, that are each visually similar to a first image of the responsive images of the initial set of search results, the auxiliary content differing from the network-accessible content (131, 132, 141) that was crawled, wherein visual similarity is based on the existing image processing; providing at least some of the responsive images of the initial set of search results as a response to the initial search query; providing, also as part of the response to the initial search query, but displayed visually separately from the provided responsive images, at least some of the auxiliary content that comprises the identified auxiliary content images; generating a subsequent, refining search query by receiving a selection of one specific image from among the responsive images of the initial set of search results that were provided to the preceding search query; identifying images, from images that were indexed by crawling network-accessible content, that are visually similar to the selected specific image for an updated set of search results; and identifying updated auxiliary content images, from the auxiliary content, that are each visually similar to a second image of the updated set of search results; and providing, with the updated set of search results, the updated auxiliary content images, wherein visual similarity between an image that was indexed and an auxiliary content image from the auxiliary content is indicative that the image that was indexed and the auxiliary content image have a common subject. receiving the auxiliary content; providing at least some of auxiliary content images from the auxiliary content to existing image processing components, including an image crawler component, a feature identifier and a similarity detector, that were utilized to process images that were indexed by crawling network-accessible content, wherein the auxiliary content is provided directly to the image crawler component instead of having been crawled for by the image crawler component; receiving an initial search query; identifying images for an initial set of search results that are responsive to the initial search query from the images that were indexed by crawling network-accessible content; identifying auxiliary content images, from the at least some of the auxiliary content images, that are each visually similar to a first image of the responsive images of the initial set of search results, the auxiliary content differing from the network-accessible content (131, 132, 141) that was crawled, wherein visual similarity is based on the existing image processing; providing at least some of the responsive images of the initial set of search results as a response to the initial search query; providing, also as part of the response to the initial search query, but displayed visually separately from the provided responsive images, at least some of the auxiliary content that comprises the identified auxiliary content images; generating a subsequent, refining search query by receiving a selection of one specific image from among the responsive images of the initial set of search results that were provided to the preceding search query; identifying images, from images that were indexed by crawling network-accessible content, that are visually similar to the selected specific image for an updated set of search results; and identifying updated auxiliary content images, from the auxiliary content, that are each visually similar to a second image of the updated set of search results; and providing, with the updated set of search results, the updated auxiliary content images, wherein visual similarity between an image that was indexed and an auxiliary content image from the auxiliary content is indicative that the image that was indexed and the auxiliary content image have a common subject.