I think google search engine is popular than yahoo search engine. I ask some people when I was in internet cafe and they answered that google is simple and its easy to load.
Both GOOGLE and YAHOO are best for online search engine. But most of people in the world use GOOGLE than YAHOO.
Of course... Google is the biggest search engine... It is very popular as people make money online from it...
If you are asking here, Google would be the answer without a doubt. If you are asking for a certain country such as Japan, the answer would be Yahoo without a doubt. That's why Google once hired someone buy links built up reputation for Google.co.jp, get caught and fed out already. Weird.
Google is the biggest, all the search engines other than google add up together still cant beat google
That is surely one very interesting news for me! I was not aware big g itself indulged in such practices! As to OP's question... it is undoubtedly google as its brand name has become almost synonymous with that of online search! Haven't you heard about... googling? It clearly signifies how far well ahead google is... in terms of the leadership! Regards, RightMan