Rated 5 out of 5 stars

A must have toolbar for everyone who wishes to indulge in web development and marketing, apart from a few hassles and over filled with features, you will not have any problem with this plugin.
One issue that I personally faced was when I clicked the seoquake icon, and re enabled it, the toolbar used to show up over the url address bar and not below it.

This review is for a previous version of the add-on (2.8.8).