If you want to do a search, the usual choice is to go to Google.com and type in your search. What if you want to search in Facebook, LinkedIn, Wikipedia, or even your own Gmail or Google Docs account? You have to go the respective sites to do the search. Very troublesome, isn’t it? How about getting all the search results in one page? The Search Sidebar extension allows you to do just that.
Search Sidebar is a very useful add-on that allows you to search multiple sites with one query and search interface. The best thing is, all the search results appear in your Google search result page, so you don’t have to get used to any new interface.
Once you have installed the Search Sidebar extension, you won’t see any configuration option in your Firefox toolbar. Instead, you will see a search strip at the sidebar when you perform a search in Google (Note that this extension will not work for Google encrypted search).
When you hover your cursor over the icons in the search sidebar, the search result for that site will pop up.
If you are logged in to your Gmail, Google Docs, Facebook LinkedIn or Dropbox account, it can even search your personal account.
This excerpt is shared with permission from maketecheasier.com.