Questions and Answers
Can any body tell search Engine Optimization?
Search engine optimization (SEO also search optimization) is the process of editing and organizing the content on a webpage or across a website to increase its potential relevance to specific keywords on specific search engines and importantly ensuring that external links to the site are correctly titled and in abundance. This is done with the aim of achieving a higher organic search listing and thus increasing the volume of targeted traffic from search engines.
SEO is one of the key Web Marketing activities and can target different kinds of searches, including image search, local search, and industry-specific vertical search engines.
SEO considers how search engines work and what people search for. Optimizing a website primarily involves editing its content and HTML coding to both increase its relevance to specific keywords and to remove barriers to the indexing activities of search engines. Sometimes a site"s structure (the relationships between its content) must be altered too. Because of this it is, from a client"s perspective, always better to incorporate Search Engine Optimization when a website is being developed than to try and retroactively apply it.
OR Differentiate between search engines from subject directories.
Search engine : Last modified: Thursday, October 23, 2008
HP BladeSystem – Family Guide
Sponsored by HP
The HP BladeSystem is an infrastructure in a box. With it, you can build business solutions that are more affordable, use less power and are ready to grow with you. Download this PDF.
HP ProLiant Servers – Family Guide
Sponsored by HP
HP ProLiant servers provide a complete server infrastructure that supports both your business objectives and your business growth. Learn more. Download this PDF.
Next-Generation Power and Cooling for Blade Environments.
Sponsored by HP
HP Thermal Logic is a holistic approach to improving power and cooling efficiency in the IT infrastructure. Learn more. Download this PDF.
A program that searches documents for specified keywords and returns a list of the documents where the keywords were found. Although search engine is really a general class of programs, the term is often used to specifically describe systems like Google, Alta Vista and Excite that enable users to search for documents on the World Wide Web and USENET newsgroups.
Typically, a search engine works by sending out a spider to fetch as many documents as possible. Another program, called an indexer, then reads these documents and creates an index based on the words contained in each document. Each search engine uses a proprietary algorithm to create its indices such that, ideally, only meaningful results are returned for each query.
Search engines are ::
1. A software program that searches a database and gathers and reports information that contains or is related to specified terms.
2. A website whose primary function is providing a search engine for gathering and reporting information available on the Internet or a portion of the Internet.
A subject directory is a service that offers a collection of links to Internet resources submitted by site creators or evaluators and organized into subject categories. Directory services use selection criteria for choosing links to include, though the selectivity varies among services. Most directories are searchable.
Directories are useful when you are doing topic-based research. If you have a research project, or need to explore an idea, event, subject area, proposition, phenomenon, etc., directories are a good place to begin. Visit search engines for very targeted or obscure topics, multi-concept queries and searches for specific people, sites, etc. Directories are the better place to begin your research on topics.
General Tips
1. There are two basic types of directories: academic and professional directories often created and maintained by subject experts to support the needs of researchers, and directories contained on commercial portals that cater to the general public and are competing for traffic.
2. Academic and professional directories are created by librarians or subject experts and tend to be associated with libraries and academic institutions. These collections are created in order to enhance the research process and help users find high quality sites of interest. A careful selection process is applied, and links to the selected resources are usually annotated. These collections are often created to serve an institution"s constituency but may be useful to any researcher. As a rule, these sites do not generate income or carry advertising. INFOMINE, from the University of California, is an example of an academic directory.
3. Commercial portals are created to generate income and serve the general public. These services contain directories that link to a wide range of topics and often emphasize entertainment, commerce, hobbies, sports, travel and other interests not necessarily covered by academic directories. These sites seek to draw traffic in order to support advertising. As a part of this goal, the directory is offered in conjunction with a number of additional customer services. LookSmart is an example of a commercial portal.
4. Subject directories differ significantly in selectivity. Consider the policies of any directory that you visit.
5. One challenge to the above is the fact that not all directory services are willing to disclose either their policies or the names and qualifications of site reviewers.
6. The lines between directories, search engines and the deep Web are blurring. The deep Web is often represented by searchable news, phone books, dictionaries, maps, stock quotes, items in retail stores, multimedia files, etc. Directories are also present at some search engine sites, and sometimes their contents are searched along with content from the general Web. For example, AltaVista offers the LookSmart directory.
Directory results are sometimes placed before search engine results in order to steer users to the directory"s content. This can be a useful way of getting at substantive content relating to your query.
7. Most subject directories are searchable. For more information, see General Search Strategies later in this tutorial.
Two subject directories useful for initial exploration are Yahoo and BUBL LINK. These services illustrate vastly different policies for the selection and evaluation of sites to include in their collections.
* Yahoo does not reliably evaluate content, but only categorizes sites submitted to the service. Yahoo! Is the most famous example of a commercial portal, but it is not an appropriate research tool. To see a selected list of these types of sites, follow this link.
* BUBL LINK is a significant, professionally-maintained directory that is a UK funded project hosted by the University of Strathclyde Library in Glasgow, Scotland. Its many years of experience are apparent in the breadth of its listings, useful indexing, variety of access points and cogent, well-written annotations.
Would you let me know how search engines work and how it finds the content of the pages?
I want to know its algorithm and how it scan the pages to retrieve its related ads or keywords?
Search engines are complex piece of software. To be able to know about a page, you"re right, it has to discover it. This can be done in many ways:
- see a link from another page
- by watching logs from proxy servers
- by using logs if users are using the search engine toolbar
Now, for the indexing (the part where the keywords are extracted), there is 2 main places:
- the page itself
- the pages that are linking to this page
In the page itself, many things may be used:
- the title of the page
- the meta fields (keywords, content, etc.)
- the body of the page (all keywords, in forms, etc.)
In other pages:
- the text that has been used to link to the page (that"s the big thing that Google has introduced in the search engine market with their page rank)
Gave you some links to learn more, don"t be shy to use search engines to learn more on them!
How to get a free skateboard
Search Engines
No comments:
Post a Comment