Yes, Boolean operators are universal.
All search engine are same,they search your search string in different way because all search engine have different algorithms. Here some kind of search engines like Google, Bing, Yahoo, Alta vista, AOL Search etc.
Google all the way matey
yes and no
There are differen kinds of multiple search engines: Webcrawler.com, metacrawler.com, dogpile.com are searching both Google, yahoo, bing at the same time, and give results from both engines. Wiibeez.com is a multiple search engines in one page to search the web, music and movies, all search results are opening in new windows. This site is for making fast web searches and get fast multiple different results. Nowgoogle.com is a multi search engine based on different search results with the same keyword.
An example of non-meta-search engine is Google unlike Bing
I posted the list of search engines from wikipedia in the related links box below.
It's purely an opinion thing, I use it the most so I am most familiar with it, but there are also other very popular search engines. Many people could argue anyway on this question.
No. The algorithms of the different search engines differ. For example, Google puts more emphasis on content and social shares, whereas Bing values page title tags and Facebook likes higher.
No! Let's begin by the fact that only 4 search engine companies actually have spiders that crawl the body of the HTML of websites. Those are: Google.com, Bing.co , Ask.com and Yahoo.com. Each one of those search engines has a differne approach of algorithms for displaying results. Then, you have meta search engines. Those search engines have spiders that only crawl the meta tags and meta descriptions of the HTML within a site. Examples are metaspider.com and megaspider.com Then you have human based search engines (Directories). Those display results based on the information listed in their directory. A fantastic example is Speaktoo.com which is a fee speech platform You have mashup search engines that combine the api of other search engines, such as: Dogpile.com- All the search engines piled in one or Avasearch.com - use Google's algorithms but emphasizes the best of the web You have niche search engines, such as: Clasearch.com the classified ads search engines or Local.com for displaying results based on their regions.
All search engine are same,they search your search string in different way because all search engine have different algorithms. Here some kind of search engines like Google, Bing, Yahoo, Alta vista, AOL Search etc.
Search engine usually have their own database of sites they craw and list in their database, for example Google, Yahoo, Ask. Meta Search Engines usually do not have their own database of crawled sites, they search the databases of real search engines, usually many search engines at the same time, and provide you results. So a meta search engine will give you results from say Yahoo and Google, some meta search engines do have database of sites submitted to them. Example of a meta search engine is DogPile.
Generally speaking, meta search engines perform searches using a conglomeration of other search engines. Metasearch engines enable users to enter search criteria once and access several search engines simultaneously. Metasearch engines operate on the premise that the Web is too large for any one search engine to index it all and that more comprehensive search results can be obtained by combining the results from several search engines. This also may save the user from having to use multiple search engines separately.