Internet encyclopaedias go head to head ó Jimmy Wales’ Wikipedia comes close to Britannica in terms of the accuracy of its science entries, a Nature investigation finds

Jim Giles [Nature.com, 14 December 2005]
One of the extraordinary stories of the Internet age is that of Wikipedia, a free online encyclopaedia that anyone can edit. This radical and rapidly growing publication, which includes close to 4 million entries, is now a much-used resource. But it is also controversial: if anyone can edit entries, how do users know if Wikipedia is as accurate as established sources such as Encyclopaedia Britannica?