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1、东北大学东软信息学院外文资料和译文格式要求一、译文必须采用计算机输入、打印，幅面A4。外文资料原文（复印或打印）在前，译文在后，于左侧装订。二、具体要求1、至少翻译一篇内容与所选课题相关的外文文献。2、译文汉字字数不少于4000字。3、正文格式要求：宋体五号字。附：外文资料和译文封面、空白页东北大学东软信息学院外文资料和译文专 业：计算机班 级：软工07507姓 名：学 号：07110650912指导教师： 年 月 日东北大学东软信息学院毕业设计（论文） 译文外文资料翻译Using the SEO for Firefox Plus-In外文原文:The Aelxa Toolbar allows
2、 you to perform competitive analysis and community research throughout your SEO campaigns.The Alexa Toolbars offers a short out to the formation that is provided on the web site.This information includes an estimate of traffic numbers and patterns,as well as a list of related pages in the same topic
3、al community.This information can assist you in spotting seasonal trends,as well as in discovering who is who in a particular industry or niche market.You can effectively monitor your competitors web site and marketing campaigns by carefully evaluating an Alexa traffic graph provided through the Ale
4、xa Toolbar.If a web site shows a spike in traffic,followed by an increased daily average,what happened?Did the web site get listed on a social media page like ?Did the site begin an aggressive PPC campaign?If you want to compete with other web sites for top rankings,you need to stay on top of what y
5、our competition is doing.You can also use the Alexa Toolbar to help you ask questions about traffic-generation strategies that may prove successful for your web site.Positioning your site as the authority in your community is important if you want to secure top organic positions.The Alexa Tools offe
6、rs data on related links,a list of sites that Alexa has grouped together as being related.Research these related sites and establish relationships with the owners.These relationships are the fast track to picking up valuable citation links.Alexa requires separate downloads of the Alexa Toolbar for I
7、nternet Explorer and Firefox browsers.Althoug the process of installation is the same,you must visit the Alexa Toolbar download page using the specific browser you want to install the toolbar.When you install the Alexa Toolbar,you become a number of the Alexa Community.The web sites you visit are tr
8、acked;this tracking helps to increase the relevancy and accuracy of Alexas data.This information is detached from any personal information regarding your identity and is strictly used for the purpose of accumulating a large sample of data.With that in mid,Alexa numbers tend to slant in favor of tech
9、nology orWebmaster-oriented Web sites.Compared to the average internet user,a large percentage of technology site readers have the Alexa Toolbar installed,which makes the technology sites look more popular than they actually are.Consider this potential bias when you perform competitive research on w
10、eb sites that are technology or webmaster oriented.Another competitive research tool that is quickly becoming popular is .Unlike Alexa,C is not entirely free-you must pay for access to Competes advanced features.However,C provides supplemental data to Alexa and is a worthwhile tool to evaluate your
11、competitors and your own web site.Using both Alexa and C allows you to consistently make better decisions regarding your SEO and traffic generation efforts.One of the most popular SEO browser extensions is SEO for Firefox, which was created by SEO expert Aaron Wall.SEO for Firefox gathers multiple p
12、ieces of marking data about a web site and displays that data within your browser alongside the search results from the Google or Yahoo search engine.Because the data is provided to you alongside the actual search result,the SEO for Firefox extension allows you to check the most important statistics
13、 of a web site before you even visit the domain.Some of the statistics made available by SEO for Firefox for quick view include Google PageRank,Yahoo page and domain links,and number of backlinks.These stats are all valuable pieces of information that,when used together,can give you a clear picture
14、of the relative strength of a web site.SEO for Firefox provides a very useful gauge for the number of backlinks a web page and web site have,as reported by Yahoo and MSN.The number and topical relevancy of a web sites backlinks are two of the most critical off-site SEO factors search engines use to
15、determine ranking position in the organic search-engine results.The SEO for Firefox backlinks indicator also provides the number of backlinks that come from a page on an education domain,which is usually a primary indicator of the quality of any particular web site.Licks from a page on an .edu domai
16、n are generally believed to be more trusted trusted because they are more difficult to attain than other domain extensions such as com or .info.The SEO for Firefox extension offers a useful feature that allows you to look up the statistics of a Web page by simply right-clicking anywhere on that page
17、, selecting SEO for firefox from the menu that appears, and then clicking Lookup this Page.This feature returns all the data for that particular Web page, without you having to peroform a search at Googleor yahoo, which can save you considerable time as you evaluate the Web page.Be warned that the S
18、EO for Firefox extension is resource intensive because it pulls data from multiple search-engine backend systems all at once,.For this reason, you should do your day-to-day surfing with the extension turned off, and use it only while you are doing market research.Setting the data to be retrieved on
19、demandrather than automatically is another alternative.SEO for Firefox has gone through multiple upgrades, so future upgrades and improvements are likely to occur.According to SEO expert Aaron Wall,the SEO for Firefox extension is currently being used by over 50,000 Webmasters and Internet professio
20、nals.WordPress has emerged as the most popular blogging content management system available online today. However, the “out of the box” default version of WordPress is limited from an SEO perspective. One of the main faults of the software lies in its handling of the title tags of a page.Given that
21、a Web pages title is one of the more important factors in determining ranking ability,this issue is definitely one that deserves close attention.The default WordPress setting places the title of the post,or article, as the title tag of the individual post Web page,which is not always ideal. When you
22、 write post titles from a copywriting standpoint, you want them to be catchy and draw the reader in. When you create the title tag for a Web page, you want to properly use your target keywords, as well as synonyms and other semantically linked keywords. These two important SEO considerations are oft
23、en at odds with each other.The SEO Title Tag plug-in solves this problem by allowing you to define a custom title tag for each and every page of your Web site, without making any adjustments to your post titles. Now you can have both a catchy title for your readers and a keyword-rich title for searc
24、h-engine ranking purposes. This prevents you from having to compromise either aspect of your site and saves you the time it would take to create a title that works fairly well for both. Instead, you can spend your time writing two separate titles that each serves a purpose far better than a hybrid t
25、itle would.The SEO Title Tag plug-in allows you to set title tags for “secondary” Web pages such as 404 error pages, or tag pages. A 404 error page appears when a visitor tries to access a Web page that does not exist on your site. Of course, you do not want a title that is optimized for ranking you
26、r error page, but in this case the plug-in would be used to offer a short and concise title insteadIf you decide to use a tag cloud on your Web site, each individual tag has its own page. A tag cloud is a visual depiction of user-generated tags. Each Web page lists all the posts that were given that
27、 particular tag. The plug-in allows you to easily manipulate the title tag for each tag page.A primary advantage of using the SEO Title Tag plug-in is that it allows you to quickly add custom title tags to your Web sites internal search results pages. This can greatly increase the number of Web page
28、s contained in your site, and can prevent a situation from arising where you have several hundred pages indexed with the same exact title.The default out of the boxversion of WordPressdoes not systematically optimize description meta tags. However, WordPress description tag plug-ins that enable you
29、to easily optimize description meta tags are available. Although keyword and description meta tags are not considered as important as they were in the past, using them is still a good habit to have, and they may eventually be weighed more heavily in the future. Of these tags, the meta description ta
30、g has retained the largest value. Often, this tag appears as the short description snippet in the search-engine results for your Web page.The Add Meta Tags WordPress plug-in provides several options for you to optimize your meta tags. The first option is to allow the Add Meta Tags plug-in to automat
31、ically populate the description tag for you. Although this option automates the description tag, it is not ideal because it pulls an excerpt of content from the page that may or may not be representative of the page as your description.If you prefer to have more control, the second option allows you
32、 to define a custom description meta tag for every page of your Web site. Although this can be a tedious task if you already have hundreds of pages, it is a rather small addition if you are just starting out and are planning ahead. Adding a custom description to your Web pages should take only a few
33、 seconds.A slightly more advanced use of the Add Meta Tags plug in is to rework the description tags of Web pages that are already ranking well. If the description meta tag is correctly appearing as the two-line description in the search-engine result for your Web page, adjusting the description can
34、 have an impact on your click-through rate from that listing. This requires continuous testing, but the testing pays off in the form of more traffic when you find the optimal description.In addition to providing optimization options for your meta description tags, the AddMeta Tags plug-in for WordPr
35、ess allows you to optimize your meta keyword tags. The meta keywords tag is worth far less than it used to be, but is still used for data retrieval by Yahoo and may be considered by other search engines.The keyword tag is a good place to include common synonyms or abbreviations that may seem awkward
36、 or out of place in your actual body text. However, do not expect this addition to make more than a minimal impact on your Web site performance in the search engines.If you are going to tweak the description meta tag of a page, make sure you keep a copy of your previous descriptions so you can easil
37、y switch back if you notice a drop in the click-through rate. Constant testing also makes the process of writing descriptions for new pages much easier.Try to use your target keyword and its common variations at least once in your description. The keyword appears in bold in the search-engine results
38、 and hopefully catches the surfers eye. The more attractive your title and description are, the more clicks you receive from your rankings.In 2005, Google introduced the XML sitemap format, and in 2006 it was adopted by Yahoo, MSN, and ask.This gave publishers a standard format to follow for creatin
39、g one sitemap that the top search engines could use. You can find specifics about the protocol at www.sitemaps.org.Because blogs can become very large, a sitemap is often needed to ensure that the major search engines can locate, crawl, and index each individual Web page.However, creating a sitemap
40、by hand every time you make a new blog post gets very boring and redundant.Thankfully, there is a WordPress plug-in called Google Sitemaps Generator for WordPress that takes all the work out of maintaining an up-to-date sitemap.Once the plug-in is correctly installed, your sitemap is automatically r
41、ebuilt each time you make a new post. Not only that, the plug-in also pings the major search engines to alert them that you have updated your sitemap and added new content. This should bring the search-engine spiders to your site, and then direct them to your newly added Web page or pages.This plug-
42、in makes getting your Web site fully indexed by Google, Yahoo, MSN, and Ask incredibly easy. The more pages you have indexed, the more chances you have of being returned as a search result. This plug-in is free, and has consistently been updated to match each update to the WordPress blogging softwar
43、e. However, the developer does acceptonations for his time and effort.The Google Sitemaps Generator for WordPress provides you an easy way to make sure your WordPress blog includes a Google sitemap. Providing Google with a valid list of all your pages is an incredibly helpful addition to the process
44、 of getting your blog fully indexed by Google.Although there are certain aspects of search-engine optimization that require an attention to detail and interpretation that cannot be done automatically by a script or program, certain tasks are able to be fully automated. Whenever possible without sacr
45、ificing quality, you should make an effort to automate parts of your work. This not only saves you valuable time that could be spent doing more productive work, it also keeps your motivation levels high. Having to perform excessive amounts of mundane grunt work can kill your inspiration to work fair
46、ly quickly, so you should automate whenever and wherever you can.Keep an eye out for updates to the WordPress system. Often, developers of popular extensions and plug-ins are ahead of the curve, but you do not want to update your copy of WordPress until you know your plug-ins can handle the switch.O
47、ne of the shortcomings of WordPress from the SEO perspective is the presence of canonicalization and duplicate content issues.Canonicalization problems (in this sense) refer to the presence of multiple URLs that all return the same Web page.All the above URLs would commonly refer to the exact same p
48、age. However, it is entirely possible for a Webserver to return separate files for each request. This is a problem often overlooked by many Webmasters, but it can be very detrimental to your SEO efforts. If you have 100 links pointing to a Web page, but half the links use the www version, and the other half use the non-www version , your backlinks are being spread out over two separate URLs, and you are losing out on the weight that each of those links pass to your Web site.This can also lead to duplicate content issues, or the exact same text appe
