It's a great ad blocker, but it suffers from the same problem I have seen with other ad blockers lately.
In some pages, for example eBay, even when disabled in the eBay page, it will stop the browser from loading the page. For example, you are in the "Summary" page in your eBay and you see you have a new message. Hitting the link to see the message will put that link on the URL of the browser, but will NOT load the page. It will load it if you press the icon to reload it. As I said, even disabling the add on in eBay, will not fix the problem. You have to totally disable the add on from the add on manager. And as I said, I also seen this with other ad blockers as well.