Socialite

Socialite provides elegant Firefox integration with reddit.com and other sites using the open source reddit engine. Socialite displays a context-sensitive toolbar above pages linked from reddit, allowing you to vote articles up and down, view comments, and save pages to your profile. In addition, Socialite provides a streamlined lookup-or-submit button in the location bar that allows you to check if what you are browsing is posted to reddit and submit it with one click.