Wikipedia promotes itself as a community that anyone can join as long as they know the rules. The author reflects on her effort to join this community and to edit Wikientries on ageing so that they include an intersectional perspective, especially with regard to gender. Her excursion into Wikipedia discloses how certain entries act as sites of contestation between different communities of practice, such as feminist scholars and Wikipedia experts. The author documents and debates three interconnected discursive guidelines over which contestation takes place: notability, verifiability, and tone. These guidelines govern the way that Wikipedia operates in relationship to dominant discourses on age and gender. They are at the heart of its inequitable treatment of content matter.