In the UK, it is the owner of the Internet connection that is liable, not the user. Hence why you should declare yourself as a "communications provider" if you're going to have people you don't trust using your connection. See the Digital Economy Act 2010. Not sure about the US though.

That's basically what this is. Maybe China would let us use their firewall software and we could just get it over with.

Of all the websites and webpages on the internet, they're not going to be able to produce perfect search results for exactly what you're looking for every time. Just try different search terms. You may recall the "Why can't I own a canadian?" search auto-completion. It's only there because enough people have linked to it with those search terms. It's a computer working in the backend, no one is deliberately giving you porn, it's just the way the system has analysed your terms and found the best match it could. NSFW? Don't click it then.

Slashdot has previously posted about the decline of NoSQL. It was a nice idea, and some stuff was learnt from it, but it's not really any better than an SQL system which has been tried and tested with over 20 years of experience. There's a reason Google uses an SQL backend.

Westlaw http://www.westlaw.com/ lists Acts, Orders, etc with highlighted bits where stuff has been revoked, amended and replaced. I've used the Westlaw UK for my university course and it's proven quite helpful.