This add-on is much easier to use than any of the other options for blocking elements; the preview and undo features are very handy, and it doesn't weigh your browser down nearly as much as the others. Exactly because it has such a nice side, I thought I should draw attention to its flaw, which is that it fails to 'remove it permanently'. Refreshing the page is enough to make everything come back, which makes it useless. 'AdBlock Plus' with 'Element Hiding Helper' recently stopped working(probably because I just updated Firefox), so I just tried every other add-on of similar intent, and the only one that did remove it permanently(one called "Yet Another Remove It Permanently"), couldn't remove just what I wanted, so I guess I just have to wait and maybe some other add-on will start working again. I just wish this add-on were fixed(and updated to the newest Firefox) because it would be simply perfect.