(Note: this story received significant coverage, all in a similar vein. As it's not a WMUK story and we aren't quoted, there's little sense recording it here)
Director magazine 8 ways to sharpen your presence on Wikipedia - the article actually gives more information about the pitfalls and makes it clear that companies shouldn't undertake CoI editing.
Watford Observer South Oxhey described as a slum on Wikipedia - this article recounts an act of vandalism on English Wikipedia to a relatively low traffic article. Was fixed after a few days. Features explanations from Stevie about how WP works.