Did not increase volume. Worse and useless because it sucks your personal private information.

latest update broke playback in twitch clips editor

WARNING: DO NOT USE.
Disgusting addon, it KILLS VIDEO PLAYBACK on some sites. Do not recommend.

Asked if i wanted to show a banner ad at the bottom of the webpage. Nope!

Edit:
WARNING: DO NOT USE.
I downloaded the xpi (add-on file) and was looking in the source code, its definitely doing something dodgy. It's downloading a file from the devs homepage called https://ad.resourcefulman.net/banner/ad-locations.txt and seems to be injecting adverts etc into the web pages, and redirecting other pages. I am reporting this add-on.

Original post:
I am pretty sure this addon is malicious.
When visiting AliExpress, I get getting redirected to weird versions of the site. After some investigation I found reddit post stating "Best.aliexpress is known to be a redirection/affiliate link. Clean all cookies of your browser. then revisit aliexpress." After I used "forget site", it started happening almost immediately again. I disabled all my add-ons and re-enabled them one at a time, I found that after re-enabling "600% Sound Volume", the redirects would consistently happen. If I forgot site, and had 600% addon disabled, I could browse Ali indefinitely, however as soon as I re-enabled 600%, all subsequent Ali browsing would be getting redirect to the affiliate link.

it bug the videos and make problem of mime type not found in site videos Mozilla firfox and the sound restart automatically and you have to adjust it again and again

Nope. Doesn't do anything.

Removes the audio and can't get it back on that tab!!!

Does not work properly. Keeps on going back to the default volume at 100% even when the volume is boosted.

Decreasing volume doesn't work on sites like songsterr

doesn't work

"If you press YES a small AD banner will be displayed at the bottom of the pages."

You serious?

What's the guarantee that the author is not spying on the users using this adware then?

Also, it doesn't even work in most of the pages.

Doesn't do shit

Does not work for me and it used to.
It asks for rating to go past 100% and after rating still wont go past 100%.

This addon inserts ads and the privacy policy does not tell the whole truth about it.

Has built-in ads

No, you cannot inject ads onto my page for your two line plugin. Who do you think you are? Suck an egg

webpage AD

Doesn't work on most websites. Really bad..