Leak Extension Monitor
When developers create their Firefox extensions, the Leak Extension Monitor is almost a requirement before distributing it over the Internet. However, this extension is not to be used for end-users at all. The only reason end-users would be interested in this extension would be to view and uninstall other Firefox extensions, which cause memory leaks.
For those who don't know what a memory leak is, a memory leak is when a developer allocates an object in memory and then doesn't release the object from memory. If a programmer calls this function once, you'll have one memory leak, but if the programmer calls that function more than once, then you have the Firefox bloat in the Task Manager that eats up memory faster than a hungry person at a buffet.
Anyway, back to the extension. Installation was easy and took no time at all to start. Now the drawbacks.
If you visit any Google sites or Google service, this will be a constant iritation, because the dialog box keeps popping up regarding memory leaks. After a while, it became an annoyance more than a help, but again, only use the extension when developing. Its not for end-users unless you think your Firefox has memory leaks in your installed extensions.
One recommendation to the author is to create a status bar toggle button to turn the Leak Extension Monitor on or off. However, I have enough on my status bar as it is, but this would still be a welcome addition when the extension is not needed.