Wow, good news! It will save a lot of people if it works well. I don't remember what settings I changed on my FireFox (I'm a forgetful person), but my FireFox has prevented me from accessing several phising sites. Btw, have you tried accessing those phising sites using this add-ons? And why it only provides protection for LibertyReserve?

PS: I just realized that it's still on experimental stage, so I think we better wait until the owner makes a stable version.