Notice the Google filter on the left hand side:
When you click on the Google button, you are taken to results only found on Google.com:
Clearly, Google has a lot of profile and local data on people, which makes for a nice way for Yahoo to show better people results. But it basically provides a site command filter on the google.com domain, which is mostly how the other filters work.
I just find it a bit comical that they specifically show a Google filter on Yahoo Search. Why no Bing filter?
Postscript: Yahoo’s VP of Search, Larry Cornett sent me some points on this topic:
- We algorithmically generate that list of site filters based on the results returned for a given query.
- The “Google” site being listed isn’t the Google search engine. It is basically pointing to content that is found anywhere on the Google domain (e.g., profile info, forums, blog posts, etc).
- In this case, Barry has a decent amount of content, comments, and profile info that is on google-hosted pages, so that is why Google shows up algorithmically. Again, it is not pointing to the Google search engine or a search results page on Google.
Very true and much of this content is useful.