1. Where it is today and how it is used.
Web 2.0
Where it is today and how it is used.

2. Learning Objectives Learn how to blog and find blogs.
Learn how to find and participate in social networks.
Learn about RSS and podcasting
Learn about wikis
Learn about discussion groups
Learn about instant messaging

3. Communication Media
Web 2.0 technology allows more sophisticated internet participation
remains the most popular internet application
Other activities include:
Instant messaging
Blogging
Podcasting
Vlogging

4. WEB 2.0 People are the key to Web 2.0
People contribute content in various ways
Video files (YouTube)
Audio files (podcasts)
Personal commentary (blogs, online forums)
Scholarly information (wikipedia)
Categorizing (del.icio.us, diigo)

5. Privacy Some groups’ logs are archived to Web pages
Law enforcement can gather group correspondence from the hosting ISP
Some groups are private, but none can guarantee complete privacy
An anonymous r er is an account that safeguards your real identity

6. Blogs Weblog - online equivalent of a diary or personal journal
Requires the use of a blog service provider like blogger.com or wordpress.com
Service often packaged with membership in a social network
More about Blogging:Technorati's State of the Blogosphere 2011 report.

7. Social Networks

8. Social Networks

9. How old is the average Twitter or Facebook user?

10. Social Networking & Age

12. Some observations on age distribution:
Bebo appeals to a much younger audience than the other sites with 44% of its users being aged 17 or less. For MySpace, this number is also large; 33%.
Classmates.com has the largest share of users being aged 65 or more, 8%, and 78% are 35 or older.
64% of Twitter’s users are aged 35 or older.
61% of Facebooks’s users are aged 35 or older.

14. RSS “Live Bookmarks”
A Web 2.0 server technology that allows users to “syndicate” their posted material
Syndicated content is “polled” by an RSS client
RSS clients display a time ordered list of publications featuring new or updated content
Similar to a bookmark, except for the time ordering of the syndicated content
RSS feeds are updated dynamically
Top 15 Social Bookmarking Sites of 2012

15. RSS

16. RSS Acronym has various interpretations:
Really Simple Syndication
Rich Site Summary
RDF (Resource Description Framework) Site Summary
First interpretation most commonly used
Syndicated content can include any type of electronically recorded material
Syndicated audio content originally known as a podcast

17. RSS Viewing RSS content: Firefox includes an integrated RSS client
RSS clients (aka Aggregators) can be standalone applications (FeedReader)
A browser feature or add-on
Web site aggregator services (Google Reader or NewsGator Online)
Add-ons to older browser or mail clients
Firefox includes an integrated RSS client

18. Podcasting Originally, an audio broadcast
(aka Webcast) on the Internet
using streaming technology
Streaming technology designed to view/listen to files (video/audio) as they are being transmitted
These files can be recorded for later viewing
Apple’s iPod/iTunes duo supports podcasts

19. Wikis
Wiki: server software that provides the capability to create and edit Web page content using any Web Browser
Uses database technology to store organize, retrieve content on demand
Web 2.0 philosophy is central - content is provided directly by the users
Wiki staff primarily provides server support, not content

20. Wikis User contribution of content both a strength and a weakness -
Any user can post
Any user can edit
Can assemble vast array of information rapidly
But content verification also a user task
 Content is suspect
Some users deliberately post malicious, erroneous content

21. Wikis
Some wiki sites now require user registration (wikipedia)
Users may be blocked from contributing when violating rules

22. Wikis Google Docs & Spreadsheets
Allows multiple users to work collaboratively on the same document
All users must have a Google account
Uses Web browser to access documents
Other examples:
wikibooks
wikispecies
wiktionary

23. Discussion Groups
Forum where people can share information with each other via the Internet
Various forms exist:
Message Board (aka Forum)
Web-based Mailing List
Usenet
Mailing List

24. Web-based Discussion Groups
A Web-based Discussion Group is a message board or a Web-based mailing list
A message board (or forum) is a Web site where people can read, post, or reply to messages and track discussion threads
Some message boards allow anyone to post messages
Examples include: product review forums and topical discussion boards

25. Mailing Lists
A mailing list is a forum where people use messages to share information with each other
A mailing list generally has a particular subject area that is discussed
Mailing lists vary in size in terms of the number of subscribers
Some mailing lists are private while others are open for anyone to join
Communication is generally in plain text

26. Mailing List Joining a mailing list = subscription
To subscribe, send an to automated list server software (aka listserv)
Mailing lists have two delivery options
Regular list subscription: each list posting is sent to you as a separate
Digest subscription: a number of postings are collected and ed to you as one message

27. Internet Relay Chat, Web-based Chat and Instant Messaging
Communication in real-time is also possible on the Internet