Adblock Plus used to being able to block ads, commercial videos and everything, without fault. Nowadays both Youtube and Facebook have hickups in the Opera Browser, where the page will load slow, change colours, or simply just act like I pushed F5 10 times in a row. Sometimes the ads gets through, but it's rare, but overall, it's not supposed to do that!

Doesn't work like it used to on Youtube, as it gives a black screen instead of starting the video right away (without ads). However...instead of having to actually watch the ads, you just sit there for the time it normally would take to watch the ads...only the screen is black and you don't have to watch a thing! The video starts after normally, and I haven't seen any ad interrupting the video midway either.