I'm updating my review from 4 years ago when I gave it a 1 star rating.
This add-on has become one of my go-to download sources since my last review. The speed, number of sites supported, and clarity of settings has improved dramatically! I will say as well that should you come to a site that requires an additional [? plugin] to download a file, IT IS PERFECTLY SAFE.
Kudos to the developer[s] for making this one of the best download add-ons around!!