According to Guinness World Records, Googe is the most widely used search engine in the world with over 150 million searches daily. Yahoo ranks second, Dogpile third, and so on. Hope this helps.
The various Google sites get far more 'hits' then Yahoo.
This answer would be based mostly on personal opinion. There are a few facts that you can consider. Google search is used more than Yahoo. Therefore you may get more clicks on your ads if you use Google search marketing. Yahoo search marketing though, is cheaper than Google's.
Yahoo is most used in USA. Yahoo and other ones like google is a search engine that's help you to get to all of the sites on the Internet. i would recommend Google because its more used and has better search results.
Yes, you can. Ex. using Google does not mean that you can't use Ask or Yahoo!.
yahoo.... 3rd is Bing...
Well, YouTube is owned by Google and Yahoo is basically a competitor to Google.
Google and yahoo are the most commonly used.
Google and Yahoo are the most used ones, I prefer Google.
"search engines"
There were various search engines which predated Google - Yahoo was probably the most frequently used.
Yahoo would not let you store more than 10mb but if they see the account being spammed they would remove it
1. Google that's the only thing that Yahoo is used for.