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Search engine optimization - Wikipedia

TJ Maxx is an American department store chain, selling at prices generally lower than other In the company disclosed a computer security breach dating back to computer hackers had gained access to information on credit and. Beginning with uncial the assignment of sigla was Sign, Name, Date, Content, Pages, Institution, City, Country, Images. The Dominican peso is the currency of the Dominican Republic (Spanish: República . In , the Banco Central de la República Dominicana has announced that all banknotes dated will be denominated in "Pesos Dominicanos".

In order to avoid the above, SEO engineers developed alternative techniques that replace nofollowed tags with obfuscated Javascript and thus permit PageRank sculpting.

Additionally several solutions have been suggested that include the usage of iframesFlash and Javascript. Designed to allow users to find news results, forum posts and other content much sooner after publishing than before, Google caffeine was a change to the way Google updated its index in order to make things show up quicker on Google than before.

According to Carrie Grimes, the software engineer who announced Caffeine for Google, "Caffeine provides 50 percent fresher results for web searches than our last index Historically site administrators have spent months or even years optimizing a website to increase search rankings. With the growth in popularity of social media sites and blogs the leading engines made changes to their algorithms to allow fresh content to rank quickly within the search results. Historically websites have copied content from one another and benefited in search engine rankings by engaging in this practice.

However Google implemented a new system which punishes sites whose content is not unique. The Google Hummingbird update featured an algorithm change designed to improve Google's natural language processing and semantic understanding of web pages.

Hummingbird's language processing system falls under the newly recognised term of 'Conversational Search' where the system pays more attention to each word in the query in order to better match the pages to the meaning of the query rather than a few words [38]. With regards to the changes made to search engine optimization, for content publishers and writers, Hummingbird is intended to resolve issues by getting rid of irrelevant content and spam, allowing Google to produce high-quality content and rely on them to be 'trusted' authors.

Methods Getting indexed Search engines use complex mathematical algorithms to guess which websites a user seeks.

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In this diagram, if each bubble represents a website, programs sometimes called spiders examine which sites link to which other sites, with arrows representing these links.

Websites getting more inbound links, or stronger links, are presumed to be more important and what the user is searching for. In this example, since website B is the recipient of numerous inbound links, it ranks more highly in a web search. And the links "carry through", such that website C, even though it only has one inbound link, has an inbound link from a highly popular site B while site E does not. The leading search engines, such as GoogleBing and Yahoo!

Pages that are linked from other search engine indexed pages do not need to be submitted because they are found automatically. Directory and DMOZtwo major directories which closed in and respectively, both required manual submission and human editorial review.

Search engine crawlers may look at a number of different factors when crawling a site. Not every page is indexed by the search engines. Distance of pages from the root directory of a site may also be a factor in whether or not pages get crawled. Robots Exclusion Standard To avoid undesirable content in the search indexes, webmasters can instruct spiders not to crawl certain files or directories through the standard robots. When a search engine visits a site, the robots.

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As a search engine crawler may keep a cached copy of this file, it may on occasion crawl pages a webmaster does not wish crawled. Pages typically prevented from being crawled include login specific pages such as shopping carts and user-specific content such as search results from internal searches. In MarchGoogle warned webmasters that they should prevent indexing of internal search results because those pages are considered search spam. Cross linking between pages of the same website to provide more links to important pages may improve its visibility.

Adding relevant keywords to a web page's meta data, including the title tag and meta descriptionwill tend to improve the relevancy of a site's search listings, thus increasing traffic. URL canonicalization of web pages accessible via multiple urls, using the canonical link element [47] or via redirects can help make sure links to different versions of the url all count towards the page's link popularity score. White hat versus black hat techniques SEO techniques can be classified into two broad categories: The search engines attempt to minimize the effect of the latter, among them spamdexing.

Industry commentators have classified these methods, and the practitioners who employ them, as either white hat SEO, or black hat SEO.

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As the search engine guidelines [18] [19] [50] are not written as a series of rules or commandments, this is an important distinction to note. White hat SEO is not just about following guidelines, but is about ensuring that the content a search engine indexes and subsequently ranks is the same content a user will see. White hat advice is generally summed up as creating content for users, not for search engines, and then making that content easily accessible to the online "spider" algorithms, rather than attempting to trick the algorithm from its intended purpose.

White hat SEO is in many ways similar to web development that promotes accessibility, [51] although the two are not identical. Black hat SEO attempts to improve rankings in ways that are disapproved of by the search engines, or involve deception.

One black hat technique uses text that is hidden, either as text colored similar to the background, in an invisible divor positioned off screen. Another method gives a different page depending on whether the page is being requested by a human visitor or a search engine, a technique known as cloaking. Another category sometimes used is grey hat SEO.

This is in between black hat and white hat approaches, where the methods employed avoid the site being penalized, but do not act in producing the best content for users.

Grey hat SEO is entirely focused on improving search engine rankings. One peso bank note from the first regular government issue. First peso, —[ edit ] Paper money made up the bulk of circulating currency for the first peso. Provisional issues of 40 and 80 pesos were produced infollowed by regular government notes for 1, 2 and 5 pesos inand 10 and 50 peso notes in The last government notes were 1 peso notes issued in Two private banks issued paper money. The Banco Nacional de Santo Domingo issued notes between and in denominations of 25 and 50 centavos, 1, 2, 5, 10, 20, 25 and pesos.

Note that the Banco Nacional de Santo Domingo also issued notes in denominated in dollars called pesos in the Spanish text.

Peso Oro, [ edit ] When the peso oro was first introduced as a local coinage inno paper money was made and US notes continued to circulate as the U.

Only in were the first peso oro notes issued by the Central Bank in denominations of 1, 5, 10, 20, 50,and oros, though the latter two denominations were rarely used. These notes were printed by the American Bank Note Companya private printing and engraving firm.