What Firefox extensions do I use?
These two you have to have:
Image Zoom
Dynamically resize any image on a webpage. Perfect for zooming tiny thumbnails or reining in those giant digi-cam snaps.
Adblock
Kill those annoying giant banners, flashing gifs, and even the worst criminal: flash!

And these two are nice:
BlogThis
easy access to your blog - I use it for most of my posts.
Delicious Delicacies
Changes the text in your firefox preferences - it's a tradition.