Transcript Everything else: RSS feeds, blogs, wikis, and podcasts

Everything else: blogs, RSS
feeds, wikis, and podcasts
Computer Science 110
Fall 2005
Blogs: The elements (optional)
･Post Date - date:time the post was published
･Category - category the post is labeled with (can be
one or more)
･Title - main title of the post
･Body - main content of the post
･Trackback - links back from other sites
･Comments - comments added by readers
･Permalink - the URL of the full, individual article
･Footer - usually at the bottom of the post, often
showing post date/time, author, category, and stats such
as number of comments or trackbacks.
- from Wikipedia, http://en.wikipedia.org/wiki/Blogs
Elements in action
title
body
Post date
footer
category
trackback
How a blog works using LAMP
1.Request web page
Client
Web Server
(Apache)
6.Sends web page
5.Creates HTML
2.Runs code
3.Gets records
Database
(MySQL)
Code (PHP)
4.Organizes records
A blog we can edit…
RSS feeds: widely used XML
application
This stands for:
 RDF Site Summary (where
RDF stands for Resource
Description Framework)
 Rich Site Summary
 Really Simple Syndication
How RSS feeds work
<Item >in a RSS feed
Example of an <item>
Adding a RSS feed to your blog
Adding rss for a blog to your reader
subscribe
Link is on the left column
Another option is from a site…
Wiki
1.Anybody can edit the pages of the wiki, and anybody
can undo these edits
2.It is easy to write new pages for the wiki, because it
doesn't use HTML
- http://www.oddmuse.org/cgi-bin/wiki/What_Is_A_Wiki
How a Wiki works using LAMP
1.Request web page
Client
Web Server
(Apache)
6.Sends web page
5.Creates HTML
2.Runs code
3.Gets records
Database
(MySQL)
Code (PHP)
4.Organizes records
Wait a second…
ANYONE can edit a wiki? Yup.
In Wikipedia when there are problems….
Podcasts
Syndicating audio content, prompting some
folks to compare it to an audio version of a blog
Uses RSS feeds, but it puts an audio
component in the <enclosure> field
Intellectual Property rights and
copyright
Constitution, Article 1, Section 8
“The Congress shall have power…to provide for the
…general welfare of the United States To promote
the progress of science and useful arts, by
securing for limited times to authors and
inventors the exclusive right to their respective
writings and discoveries;
(emphasis added)
What has copyright become?
Licensing is replacing copyright in the digital
age
Moving long standing common law or
constitutional rights into the arena of person
to person business transactions, where
these rights no longer apply. Examples,
international arena, increasing time before
work enters the public domain
Fair use is disappearing
Public domain: Why should we care?
What’s part of Public Domain?
Still is
Was
Air
Water
Sunlight
Land
Numbers
God
Ideas & Facts*
Resources freely available, without permissions or fees
needed, and no tracking of what you read or use - all for
society to do what they want with them.
Importance of Public Domain
Common Heritage (philosophical)
New Knowledge incorporates Old (progress)
Derivitative works rely on pre-existing works
(creativity)
Social Commentary (free speech)
Lengthier Copyright Means:
http://www.copyright.cornell.edu/training
/Hirtle_Public_Domain.htm
Or…
http://www.gseis.ucla.edu/~howard/Pap
ers/pw-public-spaces.html
What this means
Dismantlement of the public sphere in general controlling social/political commentary & satire.
Criminalizing acts that might impede digital
commerce.
Controlling access to older information (our
history).
Makes the Internet a commercial venture, not for
production of ideas.
Diminishment of exploration & experimentation.
Challenges Democratic values (that anyone can
be a creator)
How to find them
To listen, just double click
How to make a podcast:
1) First you'll need to use software to record
your own audio file.
2) You’ll also need something which allows
MP3 exportation.
3) Once your audio is recorded you'll need to
create an RSS feed file.
4) Once your audio and RSS files are
completed you'll need to upload both of
them to your server/website.
Equipment you can use to make one
This is what a professional podcast
site looks like
Once you have a file, upload to
iTunes
File sharing …
What is it?
How is it useful?
Examples?