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Specify your canonical

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Carpe diem on any duplicate content worries: we now support a format that allows you to publicly specify your preferred version of a URL. If your site has identical or vastly similar content that's accessible through multiple URLs, this format provides you with more control over the URL returned in search results. It also helps to make sure that properties such as link popularity are consolidated to your preferred version. Let's take our old example of a site selling Swedish fish. Imagine that your preferred version of the URL and its content looks like this: However, users (and Googlebot) can access Swedish fish through multiple (not as simple) URLs. Or they have completely identical content, but with different URLs due to things such as a tracking parameters or a session ID: Now, you can simply add this <link> tag to specify your preferred version:

Reader raccourcis clavier Excel или OpenOffice 20 Ноя Автор: Сергей Кокшаров в Инструментарий, 20/11/2010 Если вы оптимизатор и работаете в ОС Windows, то вероятно, что программа MS Excel является одним из лучших ваших помощников. Сам я работаю в Ubuntu, поэтому моим лучшим помощником является OpenOffice и, в частности, его “Электронные таблицы”. Сегодня я хочу поделиться примером составления текстов ссылок (или анкоров) для сапы, а вернее окружающего текста для ссылок с помощью электронных таблиц. Их преимущества в том, что: — электронные таблицы (например, Excel) всегда имеются под рукой; — они позволяют ускорить поцесс составления текстов ссылок для сапы; — не требуется поиск или создание отдельного софта; — позволяют хранить результаты в привычной форме. При составлении окружающего текста для ссылок с помощью электронных таблиц используется принцип, описанный в статье про анкоры, где для заданного ключевого слова подбираются левые и правые части. Итак, если перед вами стоит задача составить анкоры, – запустите свой “Excel” и далее: 1.

Scientists create light from vacuum (PhysOrg.com) -- Scientists at Chalmers University of Technology have succeeded in creating light from vacuum – observing an effect first predicted over 40 years ago. The results will be published tomorrow (Wednesday) in the journal Nature. In an innovative experiment, the scientists have managed to capture some of the photons that are constantly appearing and disappearing in the vacuum. The experiment is based on one of the most counterintuitive, yet, one of the most important principles in quantum mechanics: that vacuum is by no means empty nothingness. In fact, the vacuum is full of various particles that are continuously fluctuating in and out of existence. They appear, exist for a brief moment and then disappear again. Chalmers scientist, Christopher Wilson and his co-workers have succeeded in getting photons to leave their virtual state and become real photons, i.e. measurable light. Explore further: What does physics reveal about the sizes of sports fields?

SEOmoz | URL Rewrites and 301 Redirects - How does it all work? URL rewrites and 301 redirects... you talk about them, you recommend them, but do you truly understand how they work? Sure, you know that rewriting a URL means that the URL displayed in the browser changes to be more SEO (and user) friendly. And you know that a 301 redirect is a permanent redirect. But let's dig a little deeper, and explain how they work together. As a developer, my very first SEO project was the task of rewriting a massive number of URLs and ensuring that the old URL redirected to the new. URL Rewrites Rewriting a URL means changing the way the URL is displayed in the browser. URL Rewrite Process: User lands on new SEO'd URL Using mod_rewrite, ISAPI_Rewrite, etc. new URL points to old URL on the server Server calls the code from the old URL Page is displayed in browser, displaying the new URL From the server's perspective, nothing has changed. 301 Redirect Once the URL is rewritten, you want to make sure that the old URL 301 redirects to the new.

Apps Status Dashboard <div id="aad-nojs">Please enable javascript to see the table containing service performance information.</div> Apps <div id='aad-nojs'>Please enable JavaScript to see the table containing service performance information. Apps Status Dashboard This page offers performance information for Google Apps services. Check back here any time to view the current status of the services listed below. Products covered by Google Apps Service Level Agreement and Technical Support Service Guidelines: Products not covered by Google Apps Service Level Agreement: RSS Feed All times are shown in your local timezone unless otherwise noted. No Issues Service disruption Service outage Google Home - Privacy - About Google - Support

Rethinking use of h2 tags in Core | One Pixel Off SEO is a critical component of a succesful website. It isn't a hack or a black art of the nefarious. Instead, it's a vital business consideration. Today I read a post that briefly tauts the use of h2 tags in Core as a way to organize the content of the page. Just to lay my opinion out there, the current use of h2 tags in Drupal Core organizes a page well, but it does little to enhance SEO. H2 tags are meant to be used in content. Blog PostsNewsJoin our mailing listCommentsWho's onlineInformationStay connected First, these words are generic. Second, these words are repetitive. Page Rank is determined by evaluating several aspects of a page: the title tag, the URL, proper heading tag use, content analysis (keyword density), the ranking of the site, the page load time, quality reciprocal links (incoming and outgoing), the presence of a sitemap, and most likely more factors. Drupal Core should be optimized for SEO out-of-the-box.

The Tech Report - PC Hardware Explored 16 great .htaccess Tricks and Hacks ~ SoftwareRoxer The .htaccess files (Hypertext Access file) is a very powerful configuration tool on Apache web server. The Apache web server has a number of configuration options that are available to the server administrator. The .htaccess is a simple ASCII text file placed in your website root directory. ErrorDocument 401 /error/401.php ErrorDocument 403 /error/403.php ErrorDocument 404 /error/404.php ErrorDocument 500 /error/500.php 2. SetEnv TZ America/Houston 3. deny from 145.186.14.122 deny from 124.15 If you use the whole IP or a part of the IP to block and add the new ones in a new line. 4. Redirect 301 /d/file.html 5. ServerSignature EMail SetEnv SERVER_ADMIN default@domain.com 6. Options +FollowSymlinks # Protect Hotlinking RewriteEngine On RewriteCond %{HTTP_REFERER} ! 7. 8. ErrorDocument 403 Order deny,allow Deny from all Allow from 124.34.48.165 Allow from 102.54.68.123 9. 10. 11. 12. 13. 14. 15. 16.

Google crée SPDY, un protocole de remplacement pour le HTTP - PC Le protocole HTTP est à la base du Web depuis une quinzaine d’années environ, et il semble que Google ne s’en satisfasse pas, quand bien même la firme estime qu’il a parfaitement rempli son rôle. Plusieurs ingénieurs de Mountain View se sont donc attaqués à un projet nommé SPDY (prononcer « speedy ») qui a pour but de remplacer à terme le HTTP. Quelques développeurs seulement travaillent sur SPDY actuellement et ce protocole n’en est encore qu’à ses balbutiements. L’objectif de Google est de le rendre complètement open source car il est évident qu’une technologie propriétaire ferait assez peur comme base du Web. SPDY est un protocole situé au niveau de la couche Application. Il est donc conçu pour transporter des données entre le serveur et le client Web, autrement dit le navigateur. La priorité pour SPDY est de réduire les temps de latence dans des fonctionnalités telles que les flux multiplexés, les ordres de priorités pour les requêtes ou encore la compression des en-têtes HTTP.

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