Rated 5 out of 5 stars

This is the greatest ad-blocker I've seen yet. It's very effective and surfing is much faster and enjoyable without publicity.

It does however interfere with some features in facebook, youtube, etc.. But there is a little known trick that allows for easy enabling/disabling karma blocker on the fly.

* Right-click on the toolbar on top and click 'customize'. The customizing dialog will appear.

* Find the Karma Blocker icon in the dialog, Pick and slide it onto any toolbar.

* Close the dialog.

A simple click on the Karma blocker icon in the toolbar will enable/disable Karma Blocker. Works great !

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