Whats a good internet filter for a MacBook?

I need to keep away from all the nasty stuff on the internet. Anyone know of any good filters for macs?
im not trying to protect against viruses i mean against porn and what not

why spend money on an macbook when you can get it for free? just go to this site and complete a few quick tasks and they'll send you one!

powered by Yahoo Answers

Technorati Tags: Internet, Internet Filter, protection