I am pretty sure that if you can optimize your site for Google, then you can optimize for Bing, Yahoo, and other search engines... I think that about 70% (maybe a little more, or less) use Google as their main search engine.
We do optimize only for Google as most other search engines follow the same algorithm that Google uses. So no need to worry about optimizing for other search engines separately.
Yes this is right If you optimize your site for Google then your site will also be optimized for bing and Yahoo etc.. but still there are slight difference among these algos like bing search engine gives the value to flash..
NO No I focusing on the search engine friendly rules and regulations. consequently, my website optimize on the all search engine include google, yahoo and bing. The Google also follows the search engine friendly rules so that it get top position.
No there are some difference between google and yahoo algorithm so, I optimized for both because yahoo also is an important source of valuable visitors.
Google ranking and Yahoo ranking a little bit different , and some key words in Google ranking in the home , may be the second page in Yahoo , but Google Optimization Well, Yahoo can also get a better ranking.
Google Optimize data will be available in Google Analytics, and your Google Analytics data will be available in Google Optimize, allowing for more advanced targeting, more advanced reporting, more advanced conversion tracking, etc.
While users of most modern mobile browsers (such as Chrome for mobile and Safari) are eligible for inclusion in Optimize experiments, you can't currently use a mobile browser to create or edit Optimize experiments.