Oddly enough, vodafone filtering is less restrictive in other ways. For instance, they never blocked The Pirate Bay, but I just switched ISP from vodafone and my new ISP (Sky) blocks the site via some TLS tricks. It's odd because while adult content blocks are purely a per-ISP choice (they offer it as a service/choice to customers), I had thought that TPB was blocked because of court orders. So how come one ISP blocks it, and other doesn't?