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Tim O'Reilly, the founder and CEO of O'Reilly Media, Inc., thought by many to be the best computer book publisher in the world, wrote:

"Web 2.0 is the network as platform, spanning all connected devices; Web 2.0 applications are those that make the most of the intrinsic advantages of that platform: delivering software as a continually-updated service that gets better the more people use it, consuming and remixing data from multiple sources, including individual users, while providing their own data and services in a form that allows remixing by others, creating network effects through an "architecture of participation," and going beyond the page metaphor of Web 1.0 to deliver rich user experiences." (O’Reilly, 2007).

Following are several online services that specialize in helping content providers and readers share their expertise and awareness.

Collaborative bookmarks

Search engines such as Google, Yahoo!, and Bing have been able to index billions of web pages across the globe. However, they have not indexed all known pages. And, there exists so many good resources today that even some valuable resources may not make their way to the top of a search engine’s results list. Plus, search engines do not typically specialize in providing results that best reflects one profession such as counseling or education. Human review and recommendation of resources is still quite valuable. Many services exist that allow the members of a profession (or any community) to share, review, and recommend (or not) a list of web sites or “bookmarks”. Among many, examples of such services include:

  • Delicious is a social bookmarking service that allows users to tag, save, manage and share web pages from a centralized source. Users can also build stacks -- a collection of links built around a common theme. http://delicious.com/
  • Digg is a website where people can collectively determine the value of content and share with other consumers. Once something is submitted, other people see it and “Digg” what they like best. If your submission is popular and receives enough “Diggs”, it is promoted to the front page of the website. http://digg.com/
  • Diigo is two services in one -- it is a research and collaborative research tool on the one hand, and a knowledge-sharing community and social content site on the other. http://diigo.com/
  • Google Bookmarks is an online service that lets you save your favorite sites and attach labels and annotations. Unlike the bookmark feature from your browser, bookmarks are stored securely online, so they are accessible even if you're using other computers. http://www.google.com/bookmarks
  • StumbleUpon uses ratings to form collaborative opinions on website quality. When you “stumble,” you will only see pages that friends and like-minded stumblers have recommended. http://www.stumbleupon.com/

Collaborative videos

I think most people forget that, at one time not very long ago, posting a video (or even a photo) online was a complicated and time consuming procedure. Definitely not today. One can capture video through their cameras, video phones, or webcams and almost instantly begin uploading to one of many video hosting sites. In addition, these online video warehouses have become social networks that provide the tools for people to connect while reviewing, commenting, or sharing videos. Videos can now also easily be embedded on any web page so that the videos, in practice, are syndicated throughout the web. Although many video sharing sites exist, the most popular include:

Questions & Answers

What are the factors that affect demand for a commodity
Florence Reply
differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
Gsbwnw Reply
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
Abdureman
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Source:  OpenStax, Ncpea handbook of online instruction and programs in education leadership. OpenStax CNX. Mar 06, 2012 Download for free at http://cnx.org/content/col11375/1.24
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