Rated 5 out of 5 stars
Put you in control of what you see in your browser.
Great for removing clutter from a webpage you're reading.
The most useful addon for firefox I've found so far.
Stopped working with Firefox 16.0.1 but I've found out that you can do element removal via the "Inspect Element" option in the context menu. Not as simple as using this addon but better than nothing. I still miss "remove everything but selection"