Greasemonkey

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• - Greasemonkey
• - Eventful

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OUTLINE

• THE INTRODUCTION
• HOW TO USE
• THE RELATIONSHIP TO THE WEB2.0
• THE CONCLUSION

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THE INTRODUCTION

• Greasemonkey is a Mozilla Firefox extension that
  allows users to install scripts
• As the Greasemonkey scripts are persistent, the
  changes made to the web pages are executed every
  time the page is opened
• Greasemonkey can be used for
• adding new functionality to web pages
• fixing rendering bugs
• combining data from multiple webpages
• numerous other purposes

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THE INTRODUCTION

• Eventful is a web service which aims to help
  users to search for, track, and share information
  about events.
• Anyone may add information about events, venues,
  performers to Eventful.
• Users can create private or public calendars,
  including "smart" calendars which automatically
  update when events matching search criteria are
  added or existing events are modified.

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HOW TO USE-Greasemonkey

• Using site-specific JavaScript code which
  manipulates the contents of a web page using the
  Document Object Model interface.
• userscripts.org maintains a database of
  Greasemonkey scripts,and for each it lists the
  URLs of web pages to which the scripts pertain.

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HOW TO USE-Greasemonkey

• Greasemonkey invokes the relevant scripts
• - which can add to the page
• - delete parts of it
• - move parts around
• Greasemonkey scripts contain limited optional
  metadata, which specifies
• - the name of the script
• - a description
• - a namespace URL used to differentiate
  identically named scripts
• - the default list of URLs for which the script
  is intended

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HOW TO USE-Eventful

• Eventful Demand, allows users to declare an event
  or performance they would like to see locally,
  and then campaign for others to join their
  "demand".
• A performers database was added to Eventful when
  Eventful Demand was launched

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HOW TO USE-Eventful

• My Eventful provides users with a way to view and
  manage a list of favorite performers and venues
• My Eventful also summarizes all Demands that a
  user has joined or started.

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THE RELATIONSHIP TO THE WEB2.0

• User oriented
• Folksonomies
• Syndication, aggregation and notification of data
  in RSS feeds
• Mashups , merging content from different sources,
  client- and server-side
• Allowing users to run software-applications
  entirely through a browser

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THE CONCLUSION

• Widespread use of Greasemonkey and related user
  scripting technologies will require care in
  deployment
• - Possible disruption to revenue of some
  websites.
• - Script errors resulting from lack of
  coordination between Greasemonkey developers and
  the original website developers.

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THE CONCLUSION

• - Greasemonkey only works on HTML-based pages,
  and does not work on Flash, Flex
• - Rich Internet Applications are more difficult
  for a Greasemonkey script developer to control
  than static web pages.
• - The original site developers can release a new
  version of the site
• - There is no official way for userscripts to
  update themselves

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THE CONCLUSION

• If you look at Eventful, you won't currently find
  any advertising.
• At Eventful, brands have sponsored music events
  and they're basically using Eventful as a
  platform for entrenching themselves in the
  consumer population.