CMPE 473

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CMPE 473 INTERNET PROGRAMMING
WEB LOGS

• What is a Blog
• History of Blog
• Features of Blog
• Differences with other technologies
• Technical background

Mürvet Özgür Hüseyin S Kuyumcuoglu
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What is a blog?

• WEB LOGS
• Virtual diaries
• Entries ordered in reverse chronological
• Have specific topic
• Can also upload picture, music and video

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Structure of a Blog

• Subject
• Title
• Body
• Post date
• Link to the full article
• Comments

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Sample Blog
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Blog with comment
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History of Blogs

• Mid 90s
• email lists
• news groups
• bulletin board systems
• Started as Online Personal Diaries
• Term Weblog introduced in 1997
• We blog (in 1999)
• Gained popularity with Blogger.com (1999)

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Features of Blogs

• Still used as personal diaries
• Open to public such as articles published by
  authorized authors
• Good way to publish opinions or news
• Alternative to mass media with more freedom
• Easy to use NO MORE HTML!
• Articles can be posted by SMS or e-mail
• Provide feedback to the authors Comments
• Easily searchable by blog focused search engines
  (http//blogsearch.google.com/)

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Comparison With Other Technologies

• Blog vs. Forum
• Blog vs. E-mail Discussion List
• Blog vs. Message Board

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Blogs vs. Forum
Similarity Post opinion about a subject and
receive comments

• Blog
• Written by a single or few authors
• Focused on a certain subject

• Forum
• Everybody is an author
• Subject is less focused

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Blogs vs. E-mail Discussion List

• Blog
• More polite ?
• Posts published without irritating the reader

• E-mail Discussion List
• No freedom to choose what to read
• Inbox may be filled up with unrelated posts

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Blogs vs. Message Boards
Similarity Both provide easily updatable website

• Blog
• Centralized
• Contribution optional via comments

• Message Board
• Decentralized
• Contribution makes it up

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Technical Background

• RSS
• (Really Simple Syndication Rich Site Summary)
• A file that contains list of items
• Blogs use RSS for easy updating of the content
• Search engines re-index blog sites very often
  (by RSS)
• Higher search engine rank
• More advantageous than crawling

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How Blogs Work?

• There are two components
• Software on the web server
• Generates Blogs pages
• Posting tool
• Sends content to the software
• Web forms
• Desktop softwares (b2evolution, Geeklog)

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Web based posting tool (www.blogger.com)
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Web based posting tool (www.blogger.com)
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How Blogs Work? (contd...)

• Blogs automate the creation of web pages by
• Linking pages together
• Archiving old pages
• Creating and updating RSS file
• Bloggers concentrate on writing rather than
  creating pages

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• QUESTIONS?
• CONTRIBUTIONS

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