Rory Cellan-Jones: "Go to a site like Twitter and you will see an orgy of self-promotion from journalists tweeting links to their latest stories or blog posts. ... Now all that will stop. Google searches will no longer turn up Times stories, and links posted on social networks will only take you to the papers' sign-in page. News International has opted for the most extreme form of paywall - others let search engines crawl their sites, or offer non-paying visitors a few free articles to entice them in." Read More...