ZJ, I have been using a custom UserContent.css file for sometime now and get most of my ad block content from Floppy Moose I have also added many mods for text & image size for some of my more frequently visited sites. I was going to produce a tutorial for others to follow that would have had to include root privileges, directory creation, and file editing instructions... not a small task. Am I right in my understanding that your package automagically creates a "chrome" directory and UserContent.css file? If so, would it be difficult to add access to the css file so that other mods can be added to that file? Perhaps something similar to what HideUserAgent does...