How to find .gov .edu .org sites?

how search operates or footprints for same

 

Try these footprints :

Code:

"keyword" site:.gov
"keyword" site:.edu
"keyword" site:.org

 

http://www.blackhatworld.com/blackhat-seo/black-hat-seo/491042-get-huge-search-engine-optimization-footprints-collections.html

 

I second this source!

 

great sources, thank mate