Mostly we got 80% traffic Google and 20% others, but both are important you can not ignore any one if yahoo is fine than Google is divine.
Of course google is always my first choose. Recently google has update his panda algorithm for prevent spam site and spam results. So don't worried about this spam factor. Google always provides unique results for his users. Thanks
I suppose that Google is the best search engine available in the Net because it is fast, gives more results than other other search engines.
google is by far the best, and most commonly used, but in saying that, yahoo appears in alot more rogue toolbars i've noticed.