Another Feature From Google: Search Within Search

The most popular search engine Google added one more feature to its search, where you can search within a search. If you type in popular company/website key words, like ‘amazon’, ‘wikipedia’, ‘intel’, ‘microsoft’ on Google, it brings up the relevant result at the top and immediately underneath is a second search box. If you type a keyword in that secondary search box it will return results from within that site.

I think its really very useful as we depend a lot for information on Google together with sites like Wikipedia, Amezon etc.