If you want pop-ups blocked, this works well enough. However the functionality to allow popups you want doesn't work at all.

Say you click something and it should open a popup (and you want it open) a little notifications appears saying popup blocked with two actions (allow, deny). Click deny the notification disappears and the popup doesn't open, great. Click allow and the notification disappears and the popup doesn't open... Not great.

Whitelisting sites is difficult as well.

Very little flexibility with this tool. Hope you want whatever popups the devs have decided to block blocked, because if you don't you're stuffed.