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Web 2.0: Concepts
and Applications
2Publishing Online
Overview
Blogs and wikis are two Web 2.0 tools that allow users to publish content online– Blogs function as online journals– Wikis are collections of searchable, linked Web
pages that users can create or edit collaboratively
A Web site is a collection of related Web pages that are usually hosted on the same server
Chapter 2: Publishing Online 2
Overview
Chapter 2: Publishing Online 3
Overview
Chapter 2: Publishing Online 4
The Structure of Web-based Applications
Blogs and wikis both offer users a simple way to publish content to the Web without the need to know HTML
HTML uses tags to instruct a Web browser how to display a Web page– Cascading Style Sheets (CSS) is a complementary
technology that specifies fonts, colors, layout, and placement
Chapter 2: Publishing Online 5
The Structure of Web-based Applications
Chapter 2: Publishing Online 6
The Structure of Web-based Applications
Many Web applications use a three-tiered structure that allows users to interact with the Web site– Presentation tier deals with presentation of
information– Middle tier is responsible for processing user input
• Also called the business logic tier
– Database tier is responsible for retrieving requested information
Chapter 2: Publishing Online 7
Understanding Blogs
Users update their blogs by entering new content using a blogging application– Collection of all bloggers (people who post to their
blogs) and their blogs is referred to as the blogosphere
– A permalink can be used to link to a specific article on a blog
– Blog members read and follow a blog
Chapter 2: Publishing Online 8
Corporate Blogs
Chapter 2: Publishing Online 9
Understanding Blogs
Citizen journalists share their thoughts about news and events
Chapter 2: Publishing Online 10
News and Opinion Blogs
Chapter 2: Publishing Online 11
Searching Frequently Updated Web Content
The World Live Web refers to the ever-changing nature of all types of information on the Web– News headlines– Frequently updated blogs– Updates on social networks– Popular terms on search engines
Chapter 2: Publishing Online 12
Searching Frequently Updated Web Content
Chapter 2: Publishing Online 13
Web-Based Blogging Applications
Chapter 2: Publishing Online 14
Interacting with a Blogger Blog
Components of most blogging applications include the ability to:– Create and edit blog posts– Configure the blog’s settings– Select a design template and customize its layout
Chapter 2: Publishing Online 15
Interacting with a Blogger Blog
To create a blog post, enter the title of the post
Use the text editor to perform basic text formatting
Create hyperlinks and upload images and videos
You can edit or delete posts
Chapter 2: Publishing Online 16
Interacting with a Blogger Blog
The Settings tab contains options for specifying:– Blog’s title and description– Whether the blog should be added to Blogger’s blog listings– Whether search engines will be allowed to index the blog
when a new post is submitted– Formatting settings– Whether to display blog comments– Email and mobile settings– Permissions settings
Chapter 2: Publishing Online 17
Interacting with a Blogger Blog
Chapter 2: Publishing Online 18
Interacting with a Blogger Blog
The Layout tab allows you to configure your blog by customizing:– Page elements
• Gadgets / widgets
– Fonts and colors– Templates
Chapter 2: Publishing Online 19
Blogging with Multimedia
Bloggers can upload images and videos from their computer, or third-party multimedia sharing services such as Flickr or YouTube
Adding images to a blog enhances the blog– Most blogging applications resize images so that
they fit in the content area– Use images in a compressed image format to
reduce size
Chapter 2: Publishing Online 20
Blogging with Multimedia
Chapter 2: Publishing Online 21
Blogging with Multimedia
Chapter 2: Publishing Online 22
Blogging with Multimedia
You can embed content in a blog or on a Web page
Chapter 2: Publishing Online 23
Blogging with Multimedia
Chapter 2: Publishing Online 24
Blogging with Multimedia
Most video-sharing Web sites contain the embed code that you should place into your blog application’s HTML editor
Chapter 2: Publishing Online 25
Blogging with Multimedia
Video blogs are blogs whose posts primarily contain videos recorded by or featuring the owner of the blog
Chapter 2: Publishing Online 26
Extending a Blog’s Value
After creating a blog, you should publicize it to increase traffic– Include blog URL in e-mail signature– Add links/information to social networking sites– Become an active participant on other blogs– Back (inbound) links and outbound links– Post reciprocal links– Notify search engines (ping) when there is updated
content
Chapter 2: Publishing Online 27
Extending a Blog’s Value
Chapter 2: Publishing Online 28
Extending a Blog’s Value
Advertising is the main source of revenue for most blogs– Leaderboard/banner ads– Skyscraper ads
Context-sensitive text, image, or video advertisements are related to page content
Chapter 2: Publishing Online 29
Extending a Blog’s Value
Chapter 2: Publishing Online 30
Extending a Blog’s Value
Google AdSense ads displayed on a blog are priced at either– Cost-per-click (CPC)
• Paid when users click an advertisement
– Cost-per-1000-impressions (CPM)• Paid when the ad appears 1000 times
Blogger offers built-in functionality to work with Google AdSense
Chapter 2: Publishing Online 31
Extending a Blog’s Value
Chapter 2: Publishing Online 32
Understanding Wikis
A wiki is a collection of Web pages where users can add, discuss, or edit existing content that they, or others, have created
Contributors of wikis usually have to register to be able to make changes
Wikis have an open structure allowing users to create new pages and link existing pages
Chapter 2: Publishing Online 33
Understanding Wikis
Chapter 2: Publishing Online 34
Understanding Wikis
Chapter 2: Publishing Online 35
Understanding Wikis
Many wiki providers host wiki applications on their own servers and allow contributors to use their features at no cost– They charge additional fees for increased storage
Domain names assigned by hosting services typically contain elements of both the provider’s and user’s domain name
Custom domain names are shorter and easier to remember
Chapter 2: Publishing Online 36
Understanding Wikis
Chapter 2: Publishing Online 37
Understanding Wikis
Wikis can be used in many different settings, such as in a college information technology course– Students can post and share their notes– Users can create or edit an article using a
WYSIWYG editor– Wiki administrator can track how page was
modified over time, and who made each change• Revisions page
Chapter 2: Publishing Online 38
Understanding Wikis
Chapter 2: Publishing Online 39
Wikipedia
Successful online encyclopedia generated by contributors
Contains more than 3.1 million articlesSandbox page helps users learn how to use
the wiki application softwareNew articles are first posted in a private
section until reviewers provide feedback and corrections are made– Moved to live site after corrections are made
Chapter 2: Publishing Online 40
Wikipedia
Chapter 2: Publishing Online 41
Google Wave
Integrated collaboration tool that combines features from blogs, wikis, instant messaging, and e-mail
Streams of communication are called waves– Waves are composed of blips
Chapter 2: Publishing Online 42
Google Wave
Chapter 2: Publishing Online 43
Summary
Blogs and wikis facilitate the process of creating and sharing online content
Three-tiered architecture of Web applications Blogging is a popular tool for individuals and
organizations Blogs usually are authored and maintained by
individuals, whereas wikis reflect the knowledge of a community
Wikis are a useful collaboration tool
Chapter 2: Publishing Online 44
Web 2.0: Concepts
and Applications
2Publishing Online
Chapter 2 Complete