Best add-on I have ever seen ... Rated 5 out of 5 stars

My life as a web developer would not be this much easy without this add-on. It lets me understand complex code, help learn new techniques by mining into others' code. Love this add-on. This is the best one which has come from mozilla developers.

This review is for a previous version of the add-on (1.12.7.1-signed).