Not really the best but... Rated 4 out of 5 stars
The most important thing about how good unplug is it combine well with flashgot and it can download video from web that downloadhelper can't. especially when the file is not in flv format, like wmv, avi, and so on. But on the other note, it cannot download almost any not so popular flv video website.This review is for a previous version of the add-on (1.6.06).