AFAIK ftp has been deprecated by the team; something along the lines of it being insecure, and "no one uses it".
I'm not aware of any real ftp implementation, but do know the faux one referred to here.
I'm incredibly excited to hear about DownloadThemAll being available in Firefox once again! When Firefox switched how their plug-ins/ecosystem worked, DTA stopped working and looked like it might not be coming back.
This encouraged me to learn more about WGET and cURL, which are far more powerful, and dead simple stupid, once you get the hang of them.
That said, now that I know DTA is back up, time to be lazy again!