There is more to search and search engines than Google and Bing. This industry has seen many players come and go. There was a time when many seriously considered Yahoo! as a big challenger to Google. Now Bing occupies that position (though Google is still dominating this industry heavily). Those of you who are new to this game or just want to get a crash course of what has gone on in this industry in the past should check out this awesome infographic by PPC Blog:
Who do you think will rule the search world in the next decade?