Blocks every ad. Probably the BEST ad blocker in the world. I use it everyday. I have had it for a couple months now, and in total, it blocked 236,754 annoying ads that disrupt everyday life. I also have to give credit to uBlock Origin for blocking secret 'hidden' ads that Ad block Plus could not get to, but that only happened once. I owe a day of you tube ads that I run into when I listen to NCS music, and probably a couple hours banging my fist in annoyance to those pointless google ads. I can't even describe how much I owe Adblock Plus.