Install Ubuntu Web Apps Features in Ubuntu 12.10 Quantal/Ubuntu 12.04 Precise

Web Apps features will be include by default in the Ubuntu 12.10 Quantal. With Ubuntu Web Apps you can see unread mail in messaging menu, You can control music playing on websites from the sound menu, and much more.
This feature makes web apps first-class citizens of Ubuntu’s Unity desktop. The preview release supports over 30 websites, including Gmail, Twitter, Reddit, Facebook, Google Docs, Google Calendar, and Angry Birds.
webapps

web apps

Supported Websites:
These website are supported by Ubuntu Web Apps.

Ubuntu web apps
Mail:
  • Gmail 
  • Yahoo! Mail
  • Hotmail (Windows Live Mail)
  • Yandex Mail
  • QQ Mail
  • Mail.ru
Social Networks:
  • Twitter
  • Facebook
  • Google+
  • LinkedIn
  • Tumblr
  • VK
Music & Videos:
  • Groovershark
  • Pandora
  • Hulu
  • YouTube
  • Last.fm
  • Libre.fm
  • Yandex Music
Games:
  • Angry Birds (chrome.angrybirds.com)
  • Cut the Rope
  • Lord of Ultima
  • Command and Conquer: Tiberium Alliances
News:
  • Reddit
  • Google Reader
  • BBC News
  • CNN News
  • Google News
  • Yahoo! News
  • Yandex News
Other:
  • Google Docs
  • Google Calendar
  • Amazon Cloud Reader
  • Amazon
  • WordPress.com
  • Launchpad
  • Subway IRC

To install Web Apps in Ubuntu 12.10/12.04 open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:
That's it
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