Rated 5 out of 5 stars

OpenDownload² is a great tool but the name makes it non-searchable in Firefox's add-on manager, search box, etc. You have to stumble on it. Can't just search "download" or something popular. Thought the developer should know why his tool is not more popular.

This review is for a previous version of the add-on (3.2.2.1-signed). 

Well thanks for the hint. :)

I actually can find it through the add-on manager. I took the idea from the AddBookmark² (or whatever it is called) add-on: A more-or-less complete rewrite without being an entirely new extension. AFAICS the extension is known enough though. ;-)