I was thinking about this all day. And I think personal and family history and knowing your kids is also very important. For me, I have a lot of family members who have been to jail/prison for things that started on the Internet. I had a guild leader of my Guild Wars days that went to prison for a very long time for something he never told anyone about. One day he was there, the next he was gone and he only go the message out to one of us (we were a big guild). So I think there's genetic stuff and I think I'm a bit Internet-jaded from some of the things I've seen.

I am of the philosophy that technology should be used as a tool, not a way of life. And it inherently carries dangers. Pornography is the obvious one. It's a lot easier to get addicted to porn when you're 14 than 18. And it's very hard to get un-addicted when you're married. I've known of some couples who ended up divorced b/c of their addiction. And for some folks, it's not an issue. And for others it is. But I don't see how Internet porn is a necessity in my children's lives. They'll find it on their own. But I'd prefer it was very difficult to become addicted to it in my house. And if they can use the Internet as a tool instead of a fix, then I think they could do some amazing things with it in their adult life.

P.S. I'm not trying to preach to anyone. I'm just saying how I'm figuring it out for my family. I truly believe that every family should think about it and act on what they decide. But if they do decide to block or track, I strongly suggest OpenDNS. It's very hard to get around and it's very easy to implement and it's free and it has bonus features (like blocking known bad sites [viral and otherwise] and correcting misspellings in URLs).