Very recently it was reported that Yahoo has added millions of Flickr images into its image index.
This is a huge step for Yahoo! in their efforts to improve relevancy! This has to be the central reason why Yahoo bought Flickr in the first place way back in March 2005! It’s impressive that a move towards social search was imminent way back in 2005!
Having taken the first step, Yahoo are heading in the right direction towards using social search and rank to increase the relevancy of their image search!