You may need to take this with a grain of salt, but Yahoo may be working on integrating its search results with links to other Yahoo properties like Flickr and Delicious.
An indication towards this was offered by a commenter claiming to be from Yahoo in response to another comment on TechCrunch that emphasized on the need for Yahoo to integrate its web properties. Shreyas, the Yahoo engineer wrote
“Good point. I believe we (diff team) are working on it but will find out.”
While this may be disregarded for the simple fact that the comment is anonymous, it still makes for an interesting speculation which also makes great strategic sense for Yahoo. What do you think?