I did a search for one of my pictures today and to my surprise it came up on page 1 of 260 in the 7th spot. It is an exclusive DT image with 1 download and 58 views as of this writing. I would be interested to know how these properties effect the relevance of a photo in a database search. I know that DT keeps the algorithm for database searches under wraps but it is still interesting to think about.
Photo credits: Mvogel.