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2025-03-02 19:33本頁(yè)面
【正文】 or on television。 ? Typing a URL ? Be directed to the site by a search engine or directory web site search engine and web directories——搜索引擎 ?A search engine is a web site that helps people find things on the web. ? ?It contains three major parts: ? The first part——spider/crawler/robot——is a program that automatically searches the web to find web pages that might be interesting to people. When the spider find web pages, it collects the URL of the page and information contained on the page. This information might include: ? The page’ s title。 ? Key words included in the page’ s text。 ? Key words in the Meta tags——be hidden from the view of the web site visitors。 be enclosed in an HTML tag set。 not part of the content。 but describe the content of a web page ? Information about other pages on that web site ? The spider returns this information to the second part of the search engine to be stored. The storage element of a search engine is called its index or database. ——checks to see if information about the web page is already stored. If it is, it pares the stored information to the new information and determines whether to update the page information. The index is designed to allow fast searches of its very large amount of stored information. ?The third part of the search engine is the search utility.——is a program that creates a web page that is a list of links to URLs that the search engine has found in its index that match the site visitor’ s search terms. ?Web directories——classified hierarchical lists of categories into which search engine anizes monly searched URLs, also be referred to as search engines. ?The weighting of the factors that search engine use to decide which URLs appear first on searches for a particular search term is called a search engine ranking. ?Search engine positioning/optimization/placement——having a particular URL listed near the top of search engine results. paid search engine inclusion and placement——搜索引擎 ?Some sites obtain most of their visitors from search engines, so a high ranking that places their URL near the top of the list of links returned by the search engine is extremely important. ? Search engine sites offer panies a paid placement (sponsorship/search term sponsorship). The rates charged vary tremendously depending on the desirability of the search terms to the pany. ? Another offering for panies is to buy banner ad space at the top of search results pages that include certain terms. ? Package deals——include paid placement and banner ad purchases. ? 20232023 the large drop in inter advertising ? 2023 spending exceeded billion dollars ? The rate of increase is expected to continue at more than 20% per year ? Most of the increase is due to the boom in paid placement advertising. ? 40% paid placement ? 20% banner ad ? The plexity in this business of search engine advertising: ? Search engine placement brokers——panies that aggregate inclusion and placement rights on multiple search engines and then sell those bination packages to advertisers. Two large brokers are LookSmart and Overture. ? A flurry of mergers and acquisitions——Yahoo! Purchased Overture. Yahoo! begins its business of selling advertising for several of its major petitors. ?The most popular search engine——Google, does not use a placement broker, Google sells these services directly through its Google AdWords program. Ad brokerage services: ? Contextual adverting——the content site receives a placement fee from the broker in exchange for the ad placement and the broker sells the placement slots to interested advertisers.——content sites are used to explore and learn about more general things ? Paid placement——looking for something specific, often as part of a purchasing process. ? Localized advertising——results pages that are generated in response to a search for products or services in a specific local area.——very attractive market for online advertisers. web site naming issues——域名 ?Companies that have a wellestablished brand name or reputation usually want the URLs for their web sites to reflect that name or reputation. ?Obtaining identifiable name to establish a web presence = obtaining the pany’ s existing image in the physical world ?Gerneral motors ? ? ? ? ? ?寶潔 ? ? ? ? ? ? ? ? ? ? ?Invest in domain name——Originally purchase the rights to the name ?URL brokers—— are in the business of selling, leasing, or auctioning domain names that they believe others will find valuable.——they can obtain domain names that have never been issued, or that are currently unused, from a domain name register. ?ICANN——the inter corporation for assigned names and numbers ?Domain name parking/hosting—— is a service that permits the purchaser of a domain name to maintain a simple web site so that the domain name remains in use. The fees charged for this service are usually much lower than those for hosting an active web site. ? 靜夜四無(wú)鄰，荒居舊業(yè)貧。 , March 21, 2023 ? 雨中黃葉樹(shù)，燈下白頭人。 19:31:2319:31:2319:313/21/2023 7:31:23 PM ? 1以我獨(dú)沈久，愧君相見(jiàn)頻。 :31:2319:31Mar2321Mar23 ? 1故人江海別，幾度隔山川。 19:31:2319:31:2319:31Tuesday, March 21, 2023 ? 1乍見(jiàn)翻疑夢(mèng)，相悲各問(wèn)年。 :31:2319:31:23March 21, 2023 ? 1他鄉(xiāng)生白發(fā)，舊國(guó)見(jiàn)青山。 2023年 3月 21日星期二 下午 7時(shí) 31分 23秒 19:31: ? 1比不了得就不比，得不到的就不要。 。 2023年 3月 下午 7時(shí) 31分 :31March 21, 2023 ? 1行動(dòng)出成果，工作出財(cái)富。 2023年 3月 21日星期二 7時(shí) 31分 23秒 19:31:2321 March 2023 ? 1做前，能夠環(huán)視四周；做時(shí)，你只能或者最好沿著以腳為起點(diǎn)的射線向前。 下午 7時(shí) 31分 23秒 下午 7時(shí) 31分 19:31: ? 沒(méi)有失敗，只有暫時(shí)停止成功！。 , March 21, 2023 ? 很多事情努力了未必有結(jié)果，但是不努力卻什么改變也沒(méi)有。 19:31:2319:31:2319:313/21/2023 7:31:23 PM ? 1成功就是日復(fù)一日那一點(diǎn)點(diǎn)小小努力的積累。 :31:2319:31Mar2321Mar23 ? 1世
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