Post on 31-Dec-2015
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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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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