On a good day, Sverker Johansson adds more than 10,000 articles to Wikipedia. Johansson is by far the most prolific contributor to the online encyclopedia, having submitted 2.7 million articles, or 8.5 percent of Wikipedia's collection, over the last seven years. The 53-year-old Swede, profiled in The Wall Street Journal this week, works as an administrator, and has degrees in linguistics, civil engineering, economics and particle physics. His Wikipedia contributions cover a range of topics: he's uploaded details about bugs, beetles, and butterflies, and is reportedly particularly proud of his work highlighting towns in the Philippines. But because Johansson uses a bot to add entries, his approach has taken criticism from other contributors who accuse him of creating unhelpful and boring pages, as The Wall Street Journal explains.