Rated 4 out of 5 stars
This is a great add-on and it is very effective at killing those notorious and extremely annoying livejasmin.com pop-under windows.
It can also be used for Blocking any other website, just add it to the Killjasmin filter list.
The only reasons I have chosen NOT to give it a 5 Star Rating is that I believe it would much easier to use if we could have the ability to right click on an undesirable websites address and have it instantly added to the Killjasmin filter list, it would also be more effective if we could use Wildcards for broader blocking capability.
The other reason I haven't given this a 5 Star rating is because there is a very slight delay before a pop-under window is closed.
Because this add-on can be used for Blocking any website you desire, perhaps the name should be changed to something more generic which would also inform potential users that it isn't just effective at killing those livejasmin.com pop-under windows, but that it can used for other undesirable sites as well.