A human-powered directory, such as DMOZ the Open Directory, depends on humans for its listings. You submit a short description to the directory for your entire site, or editors write one for sites they review. A search looks for matches only in the descriptions submitted.
Changing your web pages has no effect on your listing. Things that are useful for improving a listing with a search engine have nothing to do with improving a listing in a directory. The only exception is that a good site, with good content, might be more likely to get reviewed for free than a poor site.
Thursday, June 26, 2008
Crawler-Based Search Engines
Crawler-based search engines, such as Google, MSN create their listings automatically. They "crawl" or "spider" the web, then people search through what they have found.
Crawler-based search engines have three major elements. First is the spider, also called the crawler. In case of google it is called googlebot. The spider visits a web page, reads it, and then follows links to other pages within the site. This is what it means when someone refers to a site being "spidered" or "crawled." The spider returns to the site on a regular basis, such as every month or two, to look for changes. If you change your web pages, crawler-based search engines eventually find these changes, and that can affect how you are listed. Page titles, body copy and other elements all play a role.
Everything the spider finds goes into the second part of the search engine, the index. The index, sometimes called the catalog, is like a giant book containing a copy of every web page that the spider finds. If a web page changes, then this book is updated with new information.
[search engine crawler]
Crawler-based search engines have three major elements. First is the spider, also called the crawler. In case of google it is called googlebot. The spider visits a web page, reads it, and then follows links to other pages within the site. This is what it means when someone refers to a site being "spidered" or "crawled." The spider returns to the site on a regular basis, such as every month or two, to look for changes. If you change your web pages, crawler-based search engines eventually find these changes, and that can affect how you are listed. Page titles, body copy and other elements all play a role.
Everything the spider finds goes into the second part of the search engine, the index. The index, sometimes called the catalog, is like a giant book containing a copy of every web page that the spider finds. If a web page changes, then this book is updated with new information.
[search engine crawler]
Tuesday, June 24, 2008
Search engines Vs web directories
"Search engine" and "Web directory" are two different search services available to the Web community. Search engines have indices that are built up by robots or crawlers; whereas Web directories build up their indices through human editors. Many search engines and directories contain both a computer-generated index and a human generated index, and are referred to as hybrids.
Google, Inktomi, AltaVista, AlltheWeb and the like are all forms of search engines. These search engines write programs known as robots, crawlers and/or spiders that have the following functions: (1) to locate Web pages, (2) to read the contents of the Web pages and (3) report its findings back to the search engine's indices or databases. Many search engines update their index either on a bi-monthly or monthly basis. When Web searchers use a search engine to locate Web sites that are relevant to the keyword search, they are searching the search engine's index. A search engine with a larger and more up-to-date index is a better representation of the information available in the Web.
The term "search engine" is often used generically to describe both crawler-based search engines and human-powered directories. These two types of search engines gather their listings in radically different ways.
Google, Inktomi, AltaVista, AlltheWeb and the like are all forms of search engines. These search engines write programs known as robots, crawlers and/or spiders that have the following functions: (1) to locate Web pages, (2) to read the contents of the Web pages and (3) report its findings back to the search engine's indices or databases. Many search engines update their index either on a bi-monthly or monthly basis. When Web searchers use a search engine to locate Web sites that are relevant to the keyword search, they are searching the search engine's index. A search engine with a larger and more up-to-date index is a better representation of the information available in the Web.
The term "search engine" is often used generically to describe both crawler-based search engines and human-powered directories. These two types of search engines gather their listings in radically different ways.
Wednesday, June 18, 2008
Organic SEO
Organic or natural optimization refers to fine tuning your web site, optimizing keyword saturation and in a small way also meta tags in your pages so that the major search engine spiders will be able to easily spider and index your site in the natural or organic (non ppc) search results. Organic listings prevent click fraud losses and deliver the most possible number of quality visitors from search engines to your web site. Organic search engine optimization makes your web site more search engine spider friendly when done by professionals.
'SERP' is an abbreviation for Search Engine Results Page, ie the page that is displayed in your browser when you search for something on your search engine of choice. Free and paid-for results are displayed differently in most search engines.
The free results, which appear only through having a page relevant to the requested search, are sometimes called 'Organic SERPs'. Organic SERPs are found by the search engine by crawling the web looking for new sites and pages. They know almost all the sites that link to each page and know exactly what is on the page. Think of Organic SERPs as growing without any artificial enhancement - like paying for placement.
'SERP' is an abbreviation for Search Engine Results Page, ie the page that is displayed in your browser when you search for something on your search engine of choice. Free and paid-for results are displayed differently in most search engines.
The free results, which appear only through having a page relevant to the requested search, are sometimes called 'Organic SERPs'. Organic SERPs are found by the search engine by crawling the web looking for new sites and pages. They know almost all the sites that link to each page and know exactly what is on the page. Think of Organic SERPs as growing without any artificial enhancement - like paying for placement.
Monday, June 16, 2008
Significance of webpage optimization
Website optimization plays an important role when we sell some product through our site. Most of the webpages around the world are found through search engines. There are millions of webpage competeting for a keywords. Everyone wants to be at top position, as most of the visitors mostly visit top ranked pages. Once your site ranks good position in SERP's for your desired keywords you can get more visitors. The more traffic you get to your site more is the chances to increase your sell. There two types of optimization factors onpage optimization and offpage optimization. Onpage optimization deals with site content, various tags, webpage format, text type, and alt tag etc. Offpage optimization is not related to the page content but linking strategy with other sites.
Wednesday, May 28, 2008
Website Optimization
The web creates new challenges for information retrieval. The amount of information on the web is growing rapidly day by day. According to the suvey more than 85% of websites are found through the search engines. People surf the web using links, image and using keywords. Search engine provides the result according to the keyword or keyphrase matching. There are millions of page competeting for the same keyword. Maximum number of visitors never visit after third page of search engine result page. To attract your visitors you site have to be at top reasult page. Search Engine Optimization is a way of fine tuning your site so that your site hold good position in the search engine result page for a keywords. Search Engine Results Page is the page that is displayed in your browser when you search for something on your search engine of choice.
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