I don't use the extension that much as I do not often download on the Internet but I appreciate to handle my few download in a much better way that I could with the minimalist download function integrated in Firefox. It has powerful features and a nice customizable interface. Just one concern for me: it prevents my browser to work correctly on Virustotal.com and this has been an issue for more than one year according to previous posters. My best workaround is to disable it in private browsing then to open a private window to use the Virustotal.com site. Not a big deal but really annoying...