Seems handy, but too hard to use. Rated 2 out of 5 stars
Beware, it is extremely difficult to get rid of those three so-called pre-configured permatabs for ebay, BBC and some other spam page. I read the instructions and still couldn't figure out how to do it so I disabled the add-on.
Also, while the permatab concept is nice, there should be an easier way to close the tab when you really DO want it closed. There's nothing in the right click menu or elsewhere that I could intuitively find to accomplish that other than disabling the add-on. Nice idea, but too hard to use.