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Web 2.0

Taly Sharonwww.sharon-it.com

taly@sharon-it.com

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Agenda• What is Web 2.0?• Motivation: The Long

Tail• Some 2.0 services

examples• Web 2.0 definition

and features• Web 2.0 and Web 3.0

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Web 2.0 is not a Protocol• It is not directly related to Internet 2.• Web 2.0 is a name given to a trend

!

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Web 2.0 is the Writable Web

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The Long Tail

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Web 2.0 Definition

Web 2.0 generally refers to a second generation of services available on the World Wide Web that lets people collaborate and share information online.

Web 2.0, Wikipediahttp://en.wikipedia.org/wiki/ _2.0Web

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Web 2.0 Attributes

• Writeability• Tagging• Social Web• User Centered• Free (ad-based)

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Writability• Put your thoughts (blog)• Put bookmarks, photos, documents…• Put your desktop online

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Tagging

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Tag and Share

• Tag • Share

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Tag Clouds

Technorati’s Hot Tags

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Del.icio.us

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Del.icio.us

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Social WebHarnessing collective knowledge

• Accessible information• Accessible knowledge• Accessible information• Accessible Opinions

Rating!

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Social Web – Wisdom of Crowds

(1) diversity of opinion(2) independence of

members from one another

(3) decentralization and(4) a good method for

aggregating opinions

Show: Digg amazon.com Yahoo! Movies

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Social Networks

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User Centered

• Richer user experience • Visual• Interactive pages• Dynamic• Basically Free (ad-based)• APIs and Open source

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Ajax

Asynchronous JavaScript and XML

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Example Ajax Applications• Google Maps/Local (Yahoo, A9)• Housing Maps• Google Suggest• Windows live• Yahoo! Instant Search • GMail, Google Calendar…• Wall Street Journal• And many more..

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Google Suggest• As you type – you get query

suggestions and number of results per query.

• labs.google.com/suggest

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AlltheWeb LiveSearch• Yahoo’s AlltheWeb now has a new

Livesearch feature. • It takes the Google Suggest approach

a step further. • You will instantly see the results to

the right side.

• http://livesearch.alltheweb.com/?ek=1

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Ajax Pros/Cons• Pros

– Interactivity!• Cons

– It might easily break the expected behavior of the browser's back button

– Difficult for a user to bookmark a particular state of the application

– Users might experience delay in the interface of the web application

– It requires users to have JavaScript (or ActiveX) enabled in their browsers

– A challenge for developers interested in adhering to WAI accessibility guidelines.

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Web 2.0?

http://www.oreillynet.com/pub/a/oreilly/tim/news/2005/09/30/what-is--20web .html

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Blogs

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What is a Blog

A blog (Weblog) is a web-based publication consisting primarily of periodic articles, most often in reverse chronological order.

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Blogs and Search Engines• Regular Search Engines average

indexing delay is as high as 6-8 weeks.• Regular Search Engines promote blogs in

results, but not efficiently.• Therefore, use Blog search engines to

find:– Breaking news– Most recent information

• Blog search is typically sorted by date but with popularity sort option.

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Blog Search Engines• Technorati.com www.technorati.com/ • BlogLines www.bloglines.com/ • BlogDigger blogdigger.com/ • Blogdex.net blogdex.net/search.asp• IceRocket.com www.icerocket.com • Google BlogSearch blogsearch.google

.com • Clusty blogs.clusty.com• Sphere www.sphere.com

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Technorati• The best one around• Many options:

– All words, exact phrase, at least one, not– Search all blogs, by topic, by URL– Search by Tags– Blog find– Popular

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Organizational Blogs

• Customer relations• Marketing purposes• Sharing knowledge• Testing new ideas• Internal

communication

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Wikis

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What makes a Wiki• Collaborative Writing• Easy editing and changing

(wiki=quickly)• Monitoring changes

– History– Revert option

• Searching utility

• Problems: Spam, Vandalism

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Easy Editing

and Changin

g

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Monitoring Changes

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Spam Prevention• Restricting the use of certain words

or phrases, using word lists or regular expressions.

• Blocking access based on excessive activity.

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Vandalism

• Studies from IBM claim that most vandalism to Wikipedia is removed in 5 minutes or less.

• In some cases it takes longer, as in the John Seigenthaler Sr. Wikipedia biography controversy.

• In some cases, user accounts or IP addresses are banned from editing certain wikis, and certain pages may be 'locked', to prevent further vandalism. http://researchweb.watson.ibm.com/history/results.htm

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בעברית ויקיפדיה

http://he.wikipedia.org

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בעברית ויקיפדיה•- ב MediaWiki www.mediawiki.orgמשתמשת

אחרות – רבות כן כמו

ותורמים • מתנדבים ידי על מופעלתערכים 37,000כ-•ביום 3,000כ-• עדכוניםנעולים 10כ-• ערכים

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Organizational Wikis

• Platform for:– Procedures– Documentation

• Major issue: Permissions

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הרווחה – שרותי עוסנט

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Enterprise Wiki?• Motorola is using TWiki• Intel

– Used for technical encyclopedia– Implemented using MediaWiki, integrated with

Google Search– Launched March 2006 (preceded by pilot)– Supporting user training program– Over 3,000 article– 10% active users (edited more than 2 pages)– Problems: information security/need for a

better permission mechanism

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Blog vs. WikiBlog

• Personal expression• Ordered by dates• Older posts not

changed• Have comments/

talkbacks by viewers

Wiki• Collaborative

contribution• Ordered by topics• Constant update

• Have updates/additions by viewers and comments•http://betsysblog.blogspot.com/

2005_03_01_betsysblog_archive.html•http://www.samizdata.net/blog/glossary_archives/006470.html

*usually

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References• Wiki (Wikipedia) http://en.wikipedia.org/wiki/Wiki• What makes an enterprise wiki? (CMS Watch) http://www.

cmswatch.com/Feature/145-Wikis-in-the-enterprise?source=RSS

• Wiki software http://en.wikipedia.org/wiki/Wiki_software• List of wiki software http://en.wikipedia.org/wiki/List_of_wiki

_software• Comparison of wiki software http://en.wikipedia.org/wiki/

Comparison_of_wiki_software• TWiki – an Enterprise Collaboration Platform http://www.

twiki.org, http://www.i-zm.info/data/article.phtml?c_id=5&id=850

• Heb Wikis and Tools http://chiqchaq.sourceforge.net, http://sourceforge.net/projects/chiqchaq, http://mirror.isoc.org.il/fr_content.html

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References• http://web2.wsj2.com/• The Long Tail (Wired)

http://www.wired.com/wired/archive/12.10/tail.html

• The Long Tail (Wikipedia) http://en.wikipedia.org/wiki/The_Long_Tail

• Ajax (Wikipedia) http://en.wikipedia.org/wiki/AJAX• Gartner http://biz.yahoo.com/bw/

060516/20060516005941.html?.v=1• Microsoft plans to map the world in real-time http

://www.technologyreview.com/read_article.aspx?id=16781&ch=infotech%20&ch=infotech