The basic types of search engines include: Web crawlers, meta, directories and hybrids. Within these basic types, there are many different methods used to retrieve information. Some common search engines include Google, Bing and Yahoo.Know More
Crawlers, or spiders, are the most common type of search engine. Crawlers are user friendly and produce a large number of results. These can be manipulated with search engine optimization, a ranking system used to organize search results. Filtering through the huge number of search results can be difficult for inexperienced users looking for specific information. Examples of crawlers are Google and Bing.
Meta engines search multiple search engines at the same time to get a composite list, and includes engines like Dogpile. Directories are run by humans instead of bots and programs. Human editors review each page or item submitted to be included to ensure that the results are relevant and high quality. Examples of directories include Open Directory Project and LookSmart. Hybrids are a combination of crawlers and directories that either give you a choice between the two result groups or mix the groups together. Some hybrids include Yahoo Directories and MSN Search.
Within these groups, there are numerous search engines and often these engines have a specialty. For example, there are search engines that focus on searching for educational results that return intellectual articles, such as Google Scholar.Learn more about Internet & Networking
Google and other search engines have sophisticated algorithms to rank pages and sites, so satisfying these algorithms, which are not available to the public, can get a website into the top 10. However, experts have determined some of the basic factors these algorithms use.Full Answer >
The easiest way to create a website search engine is to use an existing online service, which do most of the work for the user. Search engine programs are available from Gigablast, Google, Bing, PicoSearch, FreeFind, FusionBot and many more.Full Answer >
Enclosing search terms in quotations marks when using a search engine tends to result in more accurate search results. Search engines look only for terms placed between quotation marks rather than terms that they determine are similar. This is a particularly useful method if the person searching remembers an exact phrase he wants to learn more about.Full Answer >
AVG Secure Search is a form of hijacking malware that accompanies some suspicious free downloads. AVG Secure Search is not a virus, but it changes some computer settings, such as adding the AVG toolbar, changing the browser's homepage and altering the default search engine without prior permission.Full Answer >