Tim O'Reilly, "Web 2.0 is a loose collection of information technologies and applications, plus the web that use them" (Rainer, p. 174). Some 2.0 web sites are AJAX, tagging, blogs, and wikis. AJAX: "is a Web development technique that allows portions of Web to reload with fresh data instead of requiring Web page to reload" (Rainer, p. 175). Tagging or tag is describes a piece of information like: a picture, article, or blog. Wikis are web site that anyone can post information or change information like Wikipedia. Personally I've used Wikipedia for my Algebra class; my professor aloud us, because it had very good information on breaking down problem.
What are some advantages of using Web 2.0? One area that is a disadvantage of course would have to be Wikipedia. Anyone can place article on Wikipedia; the problem is the information being correct. Author of any article paste information, and at time this information is not correct. This is why so many Colleges and University won't allow this site to be used, and it does fall under plagiarizing when used. My Professor had seen that with our Algebra class that Wikipedia and U-tube had the most correct information when it came to breaking down Algebra equations. What I like about Web 2.0, because I live in the Netherlands I can read articles from all over the world. Web 2.0 technology make it easier to find information from newspapers and magazines that is needed in writing college papers. Disadvantage of Web 2.0, are its dependence with users, and the Internet. Just think if the Internet was to go down how you would access information that you might need for this class, and there are web sites that are free and unsecure this to lead to being targeted by hackers.
Web 3.0 is called as "Semantic Web". It is a term coined by Tim Berners-Lee, the inventor of World Wide Web. Using Web 3.0 if one had a medical problem he/she could look up the symptoms to see what they have. They could use the web browser to find cures, but be warned some of this data may not be accurate, and there could be multiple diseases, that may have similar symptoms. I think the Web 3.0 will make it easier to find more accurate information even quicker. Just think if you wanted to go to a Mexican restaurant and see the Rocky Horror Picture Show; Web 3.0 can make sure that restaurant and the movie theater are close, and with the Internet you could get direction to both places.