“I’m afraid that Mr Johnson does not realise the many problems afflicting Wikipedia, from serious management problems, to an often dysfunctional community, to frequently unreliable content, and to a whole series of scandals,” Sanger said.
“While Wikipedia is still quite useful and an amazing phenomenon, I have come to the view that it is also broken beyond repair.”
Larry Sanger, who co-foundered the site with James Wales, speaking two weeks after he started up a rival online information source Citizendium.
The new site it claimed to have articles checked and contributed by accredited academics and specialists, but will also accept publicly-written articles, once they have been checked.
Last month a Wikipedia editor who claimed to be a theology professor at an American college was later found to be a 24-year-old college drop out.