The Remove it Permanently addon for FireFox can be found here.

I know lots of sites that say they need ad views to pay the bills, but unless they serve the ads from their own servers, I block them, due the tendency of third-party ad serving companies to get hacked or serve up malware-laden ads. My computer not being messed up is much more important to me than you paying bills using an out-of-date marketing schtick.

I especially don't feel bad about it here (or any site with a store), since I buy stuff from the marketplace.