Nods I've actually thought about the possibility of buindilg something called 'AntiNic', kinda of like AlterNic was in the 90s. The idea behind AntiNic would be to list off sites known to sponsor spam, popups, adhosting and so on and run like a DNS, automatically replacing their IP adresses with a loopback or a dud address. Then people could simply set it up as their primary DNS with their ISP or other DNS as secondary DNSes and thereafter every time they got a popup or an inline banner that was from a lister server they would be unable to resolve DNS on specifically those domains. B^)