Wikipedia founder Larry Sanger is taking the next step in the "can we trust Wikipedia?" debate, by launching a rival, Citizendium. Sanger left Wikipedia shortly after it was launched, concerned that he had no editorial control over postings.
Though it will initially be a fork of Wikipedia, using the same core of articles, Citizendium differs because it bars anonymous editing, so any spurious facts can be traced. It will also employ editors to monitor posts and settle disputes, and 'constables' to block troublesome posters (see Sanger's explanation for more details).
Whether the editing will extend to fact-checking, and whether the site will take off at all when freedom is the main draw of Wikipedia, remains to be seen.