According to Ince (2005), Spider is normally used to describe software which harvests information for search engines and other allied sites, the image here being of a program which wanders around the strands of the Internet. It searches the information over the Internet in order to serve the following purposes:
- alert users when a particular of event such as a web site being changed occurs
- perform email address harvesting (the email addresses are sold to the business owners who will use them for sending bulk emails advertising a product or a service)
- use for search engine indexing
2.What is a meta-search engine? Provide some examples.
Meta tags are HTML tags which provide information about a web page. A meta-search engine just looks at the meta tags in the HTML of the web pages, especailly the home page of web sites. The results will be aggregate in a database which is being accessed by search queries. It can also search the keywords and gather the hit rate of web sites in order to evaluate the popularity of them.
The following are the popular meta-search engines.Meta tags are HTML tags which provide information about a web page. A meta-search engine just looks at the meta tags in the HTML of the web pages, especailly the home page of web sites. The results will be aggregate in a database which is being accessed by search queries. It can also search the keywords and gather the hit rate of web sites in order to evaluate the popularity of them.
- Brainboost is designed to provide specific answers to questions asked in natural language. Currently it only supports English.
- Dogpile fetches results from Google, Yahoo!, Live Search, Ask.com, About.com, MIVA, LookSmart and several other popular search engines, including those from audio and video content providers.
- Info.com provides results from leading search engines and pay-per-click directories, including Google, Yahoo!, Bing.com, Ask, LookSmart, About and Open Directory.
3.How can you get your site listed at major search sites; and how could you improve your site ranking?
You can just register my web site via the registration page of the search engine site. For example, you can just access the url to get your web site registered at Google.
You can increase the number of hits on your website and therefore, the ranking of your site will improve accordingly. This can be achieved by the operation of bot. Just let a bot access repeatedly access your site.
References
Ince, D 2004, Developing distributed and e-commerce applications, 2nd edn, Harlow, Essex, UK: Addison – Wesley, pp. 391-406.
Posts
No comments:
Post a Comment