To improve the quality of articles that are short or lacking in detail, Wikipedia's community takes part in collaboration to expand and improve articles. A collaboration on an article may be chosen by a group of users interested in the topic (WikiProjects) for a period of time (a week, fortnight, or month) or random editors coming together under Wikipedia's principle of collaborative editing.

Collaboration takes place in all areas. Organised collaborations may take place on specific topics or subjects (e.g. cinema, cryptography, or science), and regional focuses (e.g. India or Africa). These organised collaborations are set up in conjunction with related WikiProjects or WikiPortals. Some have taken on other functional areas, such as translations of foreign-language articles, or book reporting. A few even focus on Wikipedia maintenance issues, rather than substantive additions. Collaborations can also range in the scope and aim of their work—most attempt to raise articles from stub level to comprehensive articles, while others attempt to polish larger articles until they reach featured status.

Collaborating on Wikipedia

One of the attractions of Wikipedia is that editing is collaborative. Anyone may edit an article, and anyone may edit another person's edits. Therefore, more than one person is able to contribute to an article, which has the advantages that the article may be developed more quickly than if it were just one person writing it, and the article has the experience of many contributors.