It worked fine and fast(er than others) the first time only. From the second time until I uninstalled the extension when clicking on it to convert a video it fired a lot of popups windows with advertising and content that has nothing to do with the task.

Scam

porno pop up ads. Will not work with ad blockers.

No icon after installation

Pop-up window always comes up even though the pop-up blocker is enabled, and a couple times, it was a virus that locked up my computer and tried to infect me. I had to forcefully shut down Firefox. Now that they are INSISTING that we disable our ad-blocker, I am completely removing Youtube MP3 Downloader from my computer if they don't reply back saying that they will allow the ad blocker. It's one thing to try to infect me, but this new policy is a total deal breaker.

Turn off my ad blocker my @ss.

Never ever has worked, not even once. Updated it now it disappeared from Youtube videos. Turns out the updated version wants me to use the latest version of Firefox. No thanks. That version is absolutely broken.

Opens a pop up ad window and I removed it straight away.

128 or 320 kbits. LOL thx no. Either wasting space or having shit quality. Most useful bitrates not supported.

Redirect verso sito pubblicitario, apre pagina di pubblicità.

UPDATE: Love this addon soo much and works perfectly with high quality rips everytime!
Used to love this by trying all instructions and going to the correct conversion site but does not load or get to conversion page. Only lots of ads and pop-ups that stay blank or I get to small pop-ups that flash really fast in the top Left and bottom right of my screen.
Sad as this was honestly the best and easiest to use!

This used to be an useful add-on, but now it's useless. All it does is direct you to ads. Don't bother with it.