Great !!! BUT !!! Rated 3 out of 5 stars

Had no problems with this addon :D unlike others.
But there is one issue : when the web page is hidden on youtube and then revealed again the youtube video won't stop by clicking on it, I must click on the play/pause button ! , that's a bit annoying :\ .
Please fix this quick :D

Rated 1 out of 5 stars

Does not work anymore- please fix this essential addon!!.

This review is for a previous version of the add-on (0.10.1.1-signed).  This user has 2 previous reviews of this add-on.

Great! Rated 3 out of 5 stars

This addon is essential! I would love to give this five stars since its never caused any problems but since the recent update the addon seems to break youtube videos, at least for me. I usually like to scroll through the comments as I am watching and Ive discovered that the video will go black but the audio will keep playing and the only way to fix this is to reload the page and not scroll it at all. Im not totally sure this is caused by this addon as I am not through the entire process of going through each addon one by one yet but I can't seem to find another cause so far.

Also, a very small issue with the opacity settings, the new update changed the way it darkens the page so that it can no longer be 100% black. Not a big deal but minor annoyance. Do you have any plans to bring this feature back in future releases?
(editing to add that strangely enough the recent update also changed the way the icon shows up and now on youtube the icon actually shows up inside the video player covering the play button.

This review is for a previous version of the add-on (0.9.2.1-signed). 

HI. thanks for feedback. I can't confirm scroll thing you talking about, of course i use this add-on by myself for youtube and not having any problems. Can you provide additional info? Link to video, which version add-on you have? Please, contact me by email. You can find it on add-on page on the right side.
What about complete black option, there is no trackbar for modern looking options dialog which is used in old settings dialog and i replace it by adding 5 buttons with 5 presets, and yes there is no 100% black, there is a 25%,50%,75%,85%,95% i think in new version there is to be 25,50,75,90,100

Rated 4 out of 5 stars

Does the job pretty well.
Works better (for me) than the other, more popular, darkening addon.

This review is for a previous version of the add-on (0.7.1-signed). 

A unica que funcona no FireFox Rated 5 out of 5 stars

Testei varias outras mais esta foi a unica que funcionou.
Nota 1000

This review is for a previous version of the add-on (0.7.1-signed). 

Rated 4 out of 5 stars

I will give it 5* if you make a toolbar button instead of that small icon on the right top corner of the flash element. Thank you.

This review is for a previous version of the add-on (0.7.1-signed). 

Wonderful add Rated 5 out of 5 stars

Works on every site with every flash!

This review is for a previous version of the add-on (0.7.1-signed). 

Rated 4 out of 5 stars

This add-on has a lot of potential.
Here's a few thoughts for future improvements:
Make the button on the media site optional, make it have a toolbar button. Also add a tutorial on how to integrate it with Firegestures, that would be brilliant.
Additionally, would be lovely to have a, so to say full-lights-out-mode where only the media is shown centered horizontally and vertically and the rest of the site is blacked out.
Keep working, g' luck.

This review is for a previous version of the add-on (0.6.7.1-signed). 

Rated 4 out of 5 stars

Nice challenge, nice work; but wouldn't it have been simpler (& easier) to leave the switch button as an icon on the toolbar and have it flash for instance when applicable? That would prevent any issue on pages ...

This review is for a previous version of the add-on (0.6.7.1-signed). 

Yes it is. But this is simpler (& easier) for user and that a point. Issues on some pages i always try to fix, when users tell it to me. Thank you for feedback.

Works fine now! Rated 5 out of 5 stars

Version 0.6.7 works fine. Excellent add-on.

This review is for a previous version of the add-on (0.6.5.1-signed). 

Thank you for feedback, but sorry i cant confirm this. This youtube feature working fine for me with latest Firefox and latest addon (0.6.7). Make sure you are using latest versions.

Rated 3 out of 5 stars

its useful but it somehow disabled YouTube's playlist autoplay feature. So i had to remove it. Please fix this issue.

This review is for a previous version of the add-on (0.6.5.1-signed). 

Thank you for feedback. This bug has been killed in 0.6.7 version

Rated 4 out of 5 stars

No problems so far.
Nice add-on.
It does what it says. :)

This review is for a previous version of the add-on (0.4.4.1-signed).