Tìm Hiểu về Wordpress - part 31

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Tìm Hiểu về Wordpress - part 31 8 Search Engine Optimization8.1.1 SEO Strengths and WeaknessesOut of the box, WordPress provides great flexibility in terms of organizing andmanaging your blog’s content. Much of this flexibility comes by way of WordPress’category and tag architecture. Each and every post created on your blog may beassigned to any number of both categories and tags.Categories are meant to classify content according to broad definitions, whiletags are used to classify content more specifically. For example, a post about yourfavorite movies may be categorized in the “Favorite Movies” category, while beingtagged for some of the movies featured in the article: “Star Wars,” “The Matrix,”and “Blade Runner.”Beyond this central organizing principle, WordPress brings with it many strengthsand weaknesses in terms of how content is organized and made available to bothusers and the search engines. Let’s examine some of these SEO factors beforedigging into the fine art of optimizing your WordPress-powered site for thesearch engines.8.1.2 Strong Focus on ContentContent, as they say, is king. The Web exists because of it. Users are searching forit. Search engines are built on it. In order to succeed on the Web, your site shouldbe focused on delivering useful content above all else. Awesomely, one of the maingoals of WordPress is to make publishing content as easy as possible. 287 Once WordPress is set up, getting your content online happens as fast as you can create it. On the front end, there are hundreds of top-quality themes available, each focused on organizing and presenting your content with both users and search engines in mind. 8.1.3 Built-In “nofollow” Comment Links Perhaps not as useful as originally conceived, nofollow attributes placed on WordPress + nofollow commentator links have long been thought of as an effective method of improving Check out Chapter 7.7.3 for the SEO-quality of WordPress-powered sites. For those of you who may be more information on nofollow, unfamiliar with the whole “nofollow” thing, for now suffice it to say that nofollow WordPress, and the search attributes are placed on links to prevent search engines from following those links engines. to their targets. Originally, this was intended to serve as a way to conserve valuable page rank, but after it was revealed that this method no longer works, nofollow commentator links may be a moot point. We’ll discuss this more in-depth later on in the chapter. 8.1.4 Duplicate Content Issues While the organizational strengths of WordPress are great for managing content, it also comes with a price: duplicate content. Duplicate content is essentially identical content appearing in more than one place on the Web. Search engines such as Google are reported to penalize pages or sites associated with too much duplicate content. Returning to our movie example for a moment, our WordPress-powered site may suffer in the search rankings because identical copies of our movie article are appearing at each of the following URLs: • original article -> http://example.com/blog/my-favorite-movies/ • category view -> http://example.com/blog/category/favorite-movies/ • star-wars tag view -> http://example.com/blog/tag/star-wars/ • the-matrix tag view -> http://example.com/blog/tag/the-matrix/ • blade-runner tag view -> http://example.com/blog/tag/blade-runner/288Yikes! And if that weren’t bad enough, we also see the exact same post contentappearing at these URLs: • daily archive view -> http://example.com/blog/2009/02/02/ • monthly archive view -> http://example.com/blog/2009/02/ • yearly archive view -> http://example.com/blog/2009/ • author archive view -> http://example.com/blog/author/your-name/Depending on your particular WordPress theme, this situation could be even worse.By default, all of your posts are available in identical form at each of the previoustypes of URLs. Definitely not good from a search-engine point of view. Especially ifyou are the type of blogger to make heavy use of tags, the number of duplicatedposts could be staggering.8.2.1 Controlling Duplicate ContentFortunately, WordPress’ poor handling of duplicate content is easily fixed. In fact,there are several ways of doing so. In a nutshell, we have plenty of tools andtechniques at our disposal for winning the war on duplicate content: • meta nofollow tags • meta noindex tags • nofollow attributes • robots directives • canonical meta tags • use excerpts for postsSo what do each of these sculpting tools accomplish and how do they help useliminate duplicate content? Let’s take a look at each of them. 289 8.2.2 Meta noindex and nofollow Tags ...