Google and Yahoo are the most used ones, I prefer Google.
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.
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.
Well, YouTube is owned by Google and Yahoo is basically a competitor to Google.
Google and yahoo are the most commonly used.
"search engines"
This is an invalid question dogpile is not a web browser ... a web browser is, well a piece of software used primarily to browse website. dogpile as well as Google are search engines, pieces of software used to search databases of website, the user interacts with theses though web interfaces / website. for a valid question my answer would be Google, through the fact that it's the most well-known search engine on the internet and it's database is larger than all others, ... and for the record you cannot compare dogpile to Google, as dogpile draws queries from Google, yahoo, etc. a good comparison would be between Google msn and yahoo, in which case Google comes out on top as expected.
The answer to that question is you simply find a website such as Ask, Yahoo! or Google type in your question (whatever you search) and POP you should get suggested sites which will give you what you have been searching.
Yes, you can. Ex. using Google does not mean that you can't use Ask or Yahoo!.
There were various search engines which predated Google - Yahoo was probably the most frequently used.
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.
Some of the most used sites for research are Google, Ask, Yahoo, Bing and Wikipedia. All of these sites direct to the most popular website for the query.