Generally we search the web by opening web browser and clicking on address bar and typing the web search engine URL and pressing ENTER key. Instead, there is a easy way to search the web only with keyboard using Mozilla Firefox web browser. Firefox web browser comes with integrated web search box for Google, Yahoo, Bing, Amazon.com, eBay and Wikipedia search engines where you can search the web using any of these favorite search engine. By default the web search is done using Google search engine.
To search the web using other search engines, hold the "CTRL" key and press "UP" or "DOWN" arrow key to toggle between Google, Yahoo, Bing, Amazon.com, eBay and Wikipedia search engines.
Example : If you want to search a word using Google search engine, hold "CTRL" and press "K" and type the word to search and press ENTER key. Again if you want to search the same or different word using Yahoo search engine, hold "CTRL" and press "K" and use the "UP" or "DOWN" arrow key holding "CTRL" key till you see Yahoo icon on the left corner of the search box and press ENTER key.