10/10 Rated 5 out of 5 stars

this is one of the most useful addon i ever used

i normally have multiple firefox browse opened at the taskbar, and my junk pc wasn't that kind to me in many times because it suffered from loss of memory or ram or error, and you know what happen when the firefox auto close the browse itself! really no kidding =\

but with this handy addon, now i can say goodbye to all the worries