Social Fixer for Opera

"Social Fixer for Facebook" (formerly known as Better Facebook) is a Free Browser extension that improves the Facebook site by eliminating annoyances and adding lots of great enhancements and functionality. It runs in most browsers and installs in just a minute.

Features:

Tabbed News Feeds
Themes (aka Skins)
Advanced Feed Filters
Hide Posts You`ve Already Read
Enlarge Thumbnails On Hover
Highlight New Comments
Quick Links To Your Pages and Events
Friend Tracker - Notification Of Un-Friends
Enhanced Left-Column Navigation
Automatically Retrieve Older Posts
Pin Notifications
Custom CSS/Skins