Disable browser window resizing in Firefox
Development etiquette has generally made web browsing a more pleasant experience over the years, removing such horrors as blinking text and the background midi. Unfortunately, there are a few annoyances still left on web sites, and one of the worst is the forced resizing of your web browser. Nothing peeves me more than having my browser window be resized to full screen without my permission, but if you’re a Firefox user, you can do something about it. Here is how to disable the resizing of your browser window in Firefox.

Updated: 3/11/2012 Sarah R. writes in with a great question about her Macs default web browser: