I tried to do without any ad-blocker but there was a point when video ads were constantly downloading, slowing down my network, making my computer arthritic and I'm sure counting against my data limit. I liked how AB Ultimate instantly stopped a video ad as soon as I added it. Restart Firefox and I gained a fast browser all over again.

good

Good extension!

It's an ad blocker, It working for me so far.

SO GOOD

Very Nice Ext

works really well.

Protects you even when your not aware. Best add on for Firefox and I love it!