"David Cameron wants to block certain "pornographic" search terms." It's unfortunate that David Cameron's messages were mangled up by journalists and bloggers. I'm afraid your blog is no exception. But I'm not surprised because of the way the Government's messages were all delivered at the same time. David Cameron has never to my knowledge, advocated the blocking of porn keywords. There are different initiatives here. Firstly, he wants to enforce ISPs to automatically filter pornography in homes. And completely separate to porn blocking, he wants to force Google and Bing to block specific keywords from a "blacklist". The blacklist to which he refers is actually a list of key phrases that are used by people who purposely search for websites that contain images and videos of children being exploited. This is not a list of porn keywords as you suggest in your post. As I wrote on Pandodaily.com today, keyword blocking doesn't work but when Cameron says "obvious" terms, he's not referring to anything that you have hinted at here. These are terms not known to you or your team at Vodafone. These are terms known only to experts in the field of combating online child exploitation. So, I'm afraid your blog mixed up the two initiatives into one.