alt Hacker NewsGreat point, thanks!
@IronsideXXVI, are you open to changing to gpl v3? Otherwise, there is probably a decent set of filter lists with an MIT license somewhere. The goal is for you to NOT become a filter list maintainer, and by piggybacking off an already respected set of lists, you'd build user trust in your adblocking.
I would recommend that changing to GPL just to gain better ad blocking, which is far from being a primary feature, is probably not the greatest idea if you care about licensing.