One Man's Quest To Rid Wikipedia of Exactly One Grammatical Mistake

An anonymous reader writes with this Fascinating profile of one particular Wikipedia editor Giraffedata (a 51-year-old software engineer named Bryan Henderson), who has spent the last seven years correcting only the incorrect use of "comprised of" on Wikipedia. Using a code to crawl for uses of "comprised of" throughout all of Wiki's articles, he'll then go in and manually correct them (for example, using "consists of" or "composed of") and has made over 47,000 edits to date.