When text is selected using the mouse it will automatically be copied to the clipboard.  

I've found that just about the only time I select text in my browser is when I want to copy it to the clipboard.  This extension is meant to streamline the process.  

Features: 
  - Enable/disable auto copy for text fields (v1.0.0)
  - Enable/disable copy as plain text (v1.0.2)
  - Enable/disable including URL with the copied text (v1.0.2)
  - Implemented fix for beeping sound that some users were experiencing, thanks gregg! (v1.0.4)
  - Implemented a work-around for Chrome 6 (v1.0.5)
  - Updated artwork per Google's requirements (v1.0.6)
  - Added paste on middle click capability.  See extension options to enable (v2.0.0)
  - Added ability to specify comment format which can optionally be added to copied text.  See extension options to configure (v2.0.0)
  - Added option to include the comment only if a minimum number of words are selected (v2.1.0)
  - Fixed a bug that prevented the extension from working if the options hadn't been saved (v2.1.1)
  - Added blacklist support (v3.0.0)
  - Added blacklist support for URLs (v4.0.0)
  - Added copy notify (v4.0.0)
  - Added remove selection on copy (v4.0.0)
  - Added copy as link (v4.0.0)
  - Added ctrl/shift key to disable (v4.0.0)
  - Updated paste on middle click handling (v4.0.0)
  - Re-enabled support for copy with formatting (v4.0.0)
  - Copy with comment and copy without formatting no longer rely on each other (v4.0.0)
  - Added support to disable in content editable elements (v4.1.2)
  - Added support to allow ctrl/shift to enable or disable the extension (v4.1.2)
  - Added to manifest so extension can work on any url type (v4.1.2)
  - Bug fix: auto copy would execute on text deselection, or clicking without selecting anything (v4.1.2)
  - Bug fix: stopped multiple copies when double or triple clicking (v4.1.2)
  - Bug fix: auto copy notification text unreadable on dark screens (v4.1.3)
  - Bug fix: allowed for double click and drag (v4.1.3)
  - Bug fix: Did not detect nested contentEditable elements (v4.1.4
  - Eliminated delay on triple click (v4.1.4)
  - Allow for alert on copy notice to be configurable (v4.1.4)
  

Go to the options screen to configure the features you'd like to use.

Note: 
  - This extension now works all URL types.  In order for it to work with file:/// URLs you must check 'Allow access to file URLs' on the Chrome Extensions page.  Content-scripts are automatically disabled in the Extension Gallery.  Therefore, the extension will not work on this page or any page in the Gallery, so please test it on another page.

  - Chrome version 22 or later is required to use this extension.