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Accessibility port intrinsically two types of benefits a direct and indirect. Directly brings the benefit of users because of enlargement operate, as well nell’abbattere technological barriers that do not allow users with disabilities to enjoy the web pages, in simplifying the same interfaces. This simplification also allows the integration of that portion of the population suffers from so-called digital divide, such as elderly people, foreigners or people from low cultural level.

The indirect advantage of accessibility is asking that the application of the main web standards that allow the separation of content from presentation or independence of events in javascript integrate all those users who have navigation software obsolete, slow connections, sailing in difficult conditions, or who use mobile phones or PDAs. This advantage also has repercussions on greater maintainability of sites and index in search engines.

The best definition of Link Popularity could read as follows: “Popularity of website calculated on the number of links that the site receives from other sites on the World Wide Web.” The more links that the site receives, the greater his “popularity”. Of course, not all links have the same value or the same weight. Receiving a link from a site already known and therefore people will have a higher weight than a link received, for example, from a personal website. Moreover, if the site link that has the same theme of the receiving site, this link will weigh even more. The link popularity is now a significant factor for many search engines (including Google).

Open Directory Project (also known as ODP or Dmoz) is the largest and most complete directory of the Web. To date, more than four million sites were catalogued in over 590,000 categories, maintained by a group of about 65,000 publishers specialized volunteers who continue to explore the Net and keep up to date database exists. Open Directory is the true revolution in the world of cataloguing of Web resources, and data collected are now used by all the major search engines Network. http://dmoz.org/

QUESTION

What are they and what are the meta tags?

ANSWER

The meta-tags are special HTML tags through which you can specify information (indeed, meta-information) on gender and type of web page. The full list of meta-tag is available in the official documentation W3C. The first analysis to be made on the meta-tag is that in order to a good placement on search engines, their value is rather minimal. Many experts even consider their value nil. Sfatare commonplace that the meta-tags serve to get good positions on the engines is difficult. Despite the continuing information, tests and studies conducted by research laboratories EES remains opinion of many webmasters who do not serve a website quality but enough to fill meta-tag to “climb the positions.” A few years ago, when technology development of algorithms search engine was not very refined and potential of computing and storage were very limited, the spiders concentrated its operations to reading exclusive header HTML web site pages to be indexed and few hundred characters ASCII text. To the aid of spiders ran precisely meta-tag written by webmasters in HTML, through which supplied a summary of the information contained on the page that esaurirne the necessary information to the spiders themselves. Over time, however, there has been an indiscriminate use of meta tags, with misleading information for search engines, with the aim of sviarne action and gain positions for a period also not related to the website. Such behaviour is not correct today led the search engines to relegate meta tags in positions of secondary importance. It remains important, however, their use to build websites usable. The meta-tag dedicated to the search engines are basically three:

Description

(whose syntax is: <meta name=”description” content=”inserire here descrizione”>): The meta description tag allows you to enter a description of the content on the webpage. That description should be brief, a summary of few words, preferably focusing on keywords on the page. The contents of the tag description – if well product – is often reported from the engines in searches. Even the tag for the above description applies for the title of the page. Its value is double. Used as a means of communication will intercept traffic and therefore qualified producer of value for the site owner. So not a lot of keywords but a genuine brief description of the page, with content appealing and useful for the audience to which it is put.
Keywords (whose syntax is: <meta name=”keywords” content=”chiave1,chiave2,chiave3,chiave4,etc”>): meta-tag keyowrds allows you to specify a list of keys on the topic of web page .
Robots (whose syntax is: <meta name=”robots” content=”vedere documentation W3C”>): meta-tag robots is designed to provide additional information on the web site content, “inviting” the crawler to take a conduct during the visit and analysis of the page.

The meta-tags are inserted into the HTML in the document, or between the tags and.