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Meta elements are tags used in HTML and XHTML documents to provide structured metadata about a Web page. They are part of a web page's head section. Multiple Meta elements with different attributes can be used on the same page. Meta elements can be used to specify page description, keywords and any other metadata not provided through the other head elements and attributes.
Spamdexing is the deliberate manipulation of search engine indexes. It involves a number of methods, such as link building and repeating unrelated phrases, to manipulate the relevance or prominence of resources indexed in a manner inconsistent with the purpose of the indexing system.
robots.txt is the filename used for implementing the Robots Exclusion Protocol, a standard used by websites to indicate to visiting web crawlers and other web robots which portions of the website they are allowed to visit.
Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or a web page from search engines. SEO targets unpaid traffic rather than direct traffic or paid traffic. Unpaid traffic may originate from different kinds of searches, including image search, video search, academic search, news search, and industry-specific vertical search engines.
Alexa Internet, Inc. was an American web traffic analysis company based in San Francisco. It was a wholly-owned subsidiary of Amazon.
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents.
Search engine marketing (SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising. SEM may incorporate search engine optimization (SEO), which adjusts or rewrites website content and site architecture to achieve a higher ranking in search engine results pages to enhance pay per click (PPC) listings and increase the Call to action (CTA) on the website.
Microsoft Advertising is an online advertising platform developed by Microsoft, where advertisers bid to display brief ads, service offers, product listings and videos to web users, it provides pay per click advertising on search engines Bing, Yahoo! and DuckDuckGo, as well as on other websites, mobile apps, and videos.
nofollow is a setting on a web page hyperlink that directs search engines not to use the link for page ranking calculations. It is specified in the page as a type of link relation; that is: <a rel="nofollow" ...>. Because search engines often calculate a site's importance according to the number of hyperlinks from other sites, the nofollow setting allows website authors to indicate that the presence of a link is not an endorsement of the target site's importance.
A search engine is a software system that finds web pages that match a web search. They search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in a line of results, often referred to as search engine results pages (SERPs). The information may be a mix of hyperlinks to web pages, images, videos, infographics, articles, and other types of files. Some search engines also mine data available in databases or open directories. Unlike web directories and social bookmarking sites, which are maintained by human editors, search engines also maintain real-time information by running an algorithm on a web crawler. Any internet-based content that cannot be indexed and searched by a web search engine falls under the category of deep web. Modern search engines are based on techniques and methods developed in the field of Information retrieval.
ChaCha was an American human-guided search engine that provided free, real-time answers to any question, through its website, or by using one of the company's mobile apps.
Wikia Search was a short-lived free and open-source web search engine launched by Wikia, a for-profit wiki-hosting company founded by Jimmy Wales and Angela Beesley. Wikia Search followed other experiments by Wikia into search engine technology and officially launched as a "public alpha" on January 7, 2008. The roll-out version of the search interface was widely criticized by reviewers in mainstream media.
Mahalo.com was a web directory and Internet-based knowledge exchange launched in May 2007 by Jason Calacanis. It differentiated itself from algorithmic search engines like Google and Ask.com, as well as other directory sites like DMOZ and Yahoo! by tracking and building hand-crafted result sets for many of the currently popular search terms.
Powerset was an American company based in San Francisco, California, that, in 2006, was developing a natural language search engine for the Internet. On July 1, 2008, Powerset was acquired by Microsoft for an estimated $100 million.
The multinational Internet corporation Yahoo! has received criticism for a variety of issues.
DMOZ was a multilingual open-content directory of World Wide Web links. The site and community who maintained it were also known as the Open Directory Project (ODP). It was owned by AOL but constructed and maintained by a community of volunteer editors.
Cuil was a search engine that organized web pages by content and displayed relatively long entries along with thumbnail pictures for many results. Cuil said it had a larger index than any other search engine, with about 120 billion web pages. It went live on July 28, 2008. Cuil's servers were shut down on September 17, 2010, with later confirmations the service had ended.
KidRex.org is a visual child-safe search engine powered by Google Programmable Search Engine. The website utilizes Google SafeSearch and maintains its own database of inappropriate websites and keywords. Additionally, social media websites are blocked by KidRex. Kidrex Pro is a premium version of the website with more features. Kidrex Pro Is currently being re-imagined into a brand new service.
SearchMe was a visual search engine based in Mountain View, California. It organized search results as snapshots of web pages — an interface similar to that of the iPhone's and iTunes's album selection.
RankBrain is a machine learning-based search engine algorithm, the use of which was confirmed by Google on 26 October 2015. It helps Google to process search results and provide more relevant search results for users. In a 2015 interview, Google commented that RankBrain was the third most important factor in the ranking algorithm, along with links and content. As of 2015, "RankBrain was used for less than 15% of queries." The results show that RankBrain produces results that are well within 10% of the Google search engine engineer team.
References
- ""Human-Powered" Search Engine ChaCha Gets $10 Million — Digital Media Wire". www.dmwmedia.com. Archived from the original on 2008-10-12. Retrieved 2008-01-01.
- "Wikipedia to launch human search engine - Editors Weblog". www.editorsweblog.org. Archived from the original on 2007-10-11. Retrieved 2007-10-11.
- "hengine: The Human Search Engine - hengine". www.hengine.org. Archived from the original on 2011-08-14. Retrieved 2009-06-11.
- "DMOZ - ODP". www.dmoz.org. Archived from the original on 2017-03-17. Retrieved 2009-06-11.
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