Digg released an update of Firefox Extension and also created a new Google Chrome extension, that let you Digg stories as you browse the web:
Chrome extension for PC features include: Digg count for any URL is displayed to the right of address bar, clicking reveals title and comment count for that URL, as well as a button to Digg it; share any URL on Twitter, Facebook, and email. Download.
Firefox extension improvements include: Digg count and Digg button moved to navigation bar; a shorter toolbar with keyboard shortcut (Cmd+Shift+E) to show & hide; Sharing via Twitter, Facebook, and email is now easy, right-click on any page to generate a Digg short URL; “notification thresholds and smaller notification box” make notifications of friends and popular story activity less intrusive. Download