There are five information sources over the Internet:
1. WEB SEARCH ENGINES
A web search engine is a software system that is designed to search for information on the World Wide Web. These are programs designed to search or mine the World Wide Web based on keywords provided by the user. Examples of search engines are Google, bing, Yahoo, Ask.com and many more.
2. RESEARCH INDEXING SITES
This web sites collects, parses, and stores data to facilitate fast and accurate information retrieval and done by academic researchers, engineer and social scientist.
3. MASSIVE ONLINE OPEN COURSE (MOOC)
Is a model for delivering learning content online to any person who wants to take a course, with no limit on attendance and it is dedicated to teach and inform users focused on different areas.
4. EMPLOYMENT WEB SITES
A web sites that deals specifically with employment or careers and designed to allow employers to post job requirements for a position to be filled.
5. ELECTRONIC COMMERCE (E-commerce)
It refers to the purchase and sale of goods and/or services via electronic channels such as the Internet. Electronic commerce operates in all four of the major market segments: business to business, business to consumer, consumer to consumer and consumer to business.
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