18. The computer readable medium of claim 17 , wherein a weighted edge connecting a pair of nodes has a weight that is indicative of a number of sequential selections of images represented by the pair of nodes.
18. The computer readable medium of claim 17 , wherein a weighted edge connecting a pair of nodes has a weight that is indicative of a number of sequential selections of images represented by the pair of nodes. 19. The computer readable medium of claim 18 , wherein each weighted edge has directional components indicating a source image and a destination image, the source image being an image that was selected for presentation prior to the destination image being selected for presentation.