Yahoo! announced the addition of 3 new enhanced shortcuts designed to aid the consumer search experience. These enable users to refine their searches more rapidly, as the shortcuts help them understand the most common options used by others. The shortcuts announced by Yahoo! are focused on NFL players, consumer electronics, and medical conditions and medications. Here are some sample searches:
This is extremely similar to what we saw from Google when they launched the "Topics" functionality and the Google Coop program. Here are some sample searches for how this works with Google:
As you can see, the structure is very similar. Google has not placed that much emphasis on the Google Topics program, but they have continued to show the Topics links for medical searches, so presumably they have gotten good user feedback on the functionality.
Overall, it's a nice enhancement by Yahoo!