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Web2.0 2012 - lesson 4 - twitter



Lesson 4 course Web 2.0 2012

Lesson 4 course Web 2.0 2012
University of Camerino
Microblogging and Twitter



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Web2.0 2012 - lesson 4 - twitter Web2.0 2012 - lesson 4 - twitter Presentation Transcript

  • Web 2.0 blog, wiki, tag, social network: what are they, how to use them and why they are important Microblog - Twitter
  • This material is distributed under the Creative Commons "Attribution - NonCommercial - Share Alike - 3.0", available at http://creativecommons.org/licenses/by-nc-sa/3.0/ . Part of the slides is the result of a welcome distance collaboration with prof. Roberto Polillo, University Milan Bicocca ( http://www.rpolillo.it )
  • User Generated Content ! (Read/Write Web) The user becomes an “active” protagonist Now it's important not only read the Web but also know how to write the Web (Jenkins): is this the new Digital Divide? http://en.wikipedia.org/wiki/User-generated_content two billion users, more than 200 million web sites (blogs included...) Content re-use and aggregation Web 2.0 contents - 1
  • Re-use Contents do not finish their life cycle when they are first published online, but thanks to re-use, are used for third party service, coupled with similar content, submitted for discussion or evaluation, tagged and socially shared, etc. . The main reuse is the aggregation of online content: join content from different sources The technology that aggregates is the syndication , namely the provision of contents from Web sites and online services. The main form of syndication is the Really Simple Syndication ( RSS ) a system for distributing content via XML files, allowing to constantly update users of the service each time the content is updated Web 2.0 contents - 2
  • Folksonomy - Tags and metadata In Web 2.0, tag means that labels are posted up to content, characterizing it by categories and keywords The idea behind the tag is simple: ensure that their content becomes searchable, linkable and useful based on semantic parameters (qualitative and quantitative) defined by users 2.0 applications allow to link to any content one or more tags, selected by the user. This happens for all types of content, from text (blogs) to photographs, to the videos on YouTube. Make categorization of sites using keywords selected by users Overlapped associative relationship using Tag – More Flexible Natural Information Retrieval Using User’s Activities Example: Tagging of Flickr or del.icio.us Web 2.0 contents - 3
  • Folksonomy and Semantic Web The idea of providing a system of classification (taxonomy) shared, open and bottom-up for the Net contents, is clearly at odds with the principles of the Semantic Web, whose goal is to build an order from the top Tagging instead produces, in a completely anarchic and efficient way, a folksonomy (neologism formed from the combination of folk (people) and taxonomy (classification)), whose goal is not to produce the absolute order, but the "best disorder possible ", ie one that meets the searches and knows how to adapt to an evolving set of content, constantly changing its system of classification according to mental model emerging among the users http://en.wikipedia.org/wiki/Semantic_Web Web 2.0 contents - 4
  • Geotagging Geotagging may be understood as a particular application of the tagging. You can categorize contents even from a geographical point of view: to affix a tag that contains geographic information in an image, text or video is very easy and can lead to a significant increase in the content's value es. flickr http://flickr.com/photos/37385373@N00/161862482/ and photos http://picasaweb.google.it/vaccaricarlo/Francigena2008/photo#map Web 2.0 contents - 5
  • Geotagging From the user's point of view geotagging means being able to create an annotated map shared with third parties GIS in the Web 2.0 becomes Geoweb, a system that grants users to access information via a map rather than using keywords - Geoweb: new services like Google Earth, NASA World Wind, Yahoo Maps, etc. Unlike GIS, used mostly by businesses and institutions, the Geoweb is a tool that reaches a much larger number of users. http://maps.google.com - Other – Photo How to insert Google maps into applications http://www.google.com/intl/en/press/annc/embed_maps.html http://www.openstreetmap.org/ a free map users can modify http://www.openstreetmap.org/edit?lat=43.139195&lon=13.069346&zoom=18 Web 2.0 contents - 6
  • Microblogging Constant publication of short contents in the network, in the form of text messages (usually up to 140-200 bytes), images, video, MP3 audio, but also bookmarks, citations and notes These contents are published on a social networking site, visible to everyone or only to people in your community http://en.wikipedia.org/wiki/Micro-blogging http://www.twitter.com http://it.youtube.com/watch?v=ddO9idmax0o (Twitter) http://stories.twitter.com/
  • Twitter Started in 2006, growth: TPD (tweets per day) 2007 – 40k 2008 – 1M 2010 – 65M 2011 - 250M TPS tweets per second records - 6939 TPS 1.1.2011 (Japan time 00:01) - Now FIFA Women s' World Cup Final (2011 July) 7,196 TPS - (Super Bowl 2011 4064 TPS) http://blog.twitter.com/2011/01/celebrating-new-year-with-new-tweet.html RT - retweet DM - direct message @user - to mention or reply to user # - hashtag also for “micro-meme” URL shortening to fit in 140 bytes used in “twitter revolutions” Egypt 2011, Tunisia 2010-2011, Iran 2009
  • Twitter Twittersphere: http://www.scribd.com/doc/49019436/The-state-of-the-Twittersphere-February-2011 Iphone influence: http://techcrunch.com/2011/10/17/twitter-is-at-250-million-tweets-per-day/ Twitterverse (applications -> ecosystem) http://oneforty.com/pages/twitterverse Twitterstats http://www.tweetstats.com/graphs/vaccaricarlo Apps http://visibletweets.com/#query=censimento&animation=1
  • Twitter Source: The Pew Research Center's Internet & American Life Project
  • Twitter Source: The Pew Research Center's Internet & American Life Project
  • exercise 4
    • Sign up to www.twitter.com , follow somebody and tweet something, using URL shortening and tweet from mobile
    • Use some Twitter application and report on the wiki