Breaks Paypal Mastercard site. I've been trying to figure out what was causing a spinning circle arrow and never loading the page til it times out. Finally did, tested multiple times with it on and off and most definitely breaking this connection when you click in the Paypal account to go to Paypal Mastercard/Synchrony website. Just plain works fine with uBlock off, and not at all with it on. Have to disable it til the developer finds a fix.

It does its job perfectly.

This is now the online i.p. block I use. I'm not sure about it's claim to be more efficeient memory and cpu wise; I can however say that it works well.

At some sites most of ads wasn't blocked