This is the first extension I install on any Firefox I use! Absolutely a must-have. And for those ranting that it's hard to use or that it is flawed, please do some research for more than 5 minutes, the web is never the same once you know your way around Greasemonkey!
Why is this even still available??? Without the "new user script" option working (which it is not) the entire thing is completely useless as there is no way to add a script which is the entire purpose of installing Greasemonkey. It has been this way for many months now, possibly a year or more....yet the author has updated as recently as September 7? What the hell???