- Foster collaboration by channeling contributors to the same resources, rather than having them work in parallel
- Reduce maintenance by avoiding duplicate content that needs to be updated independently
- Improve content quality by encouraging editors to merge and reuse related content, rather than having multiple versions in various stages of development
Excerpts are often useful in sections with a main article. Such sections are usually summaries of the main article, so their original content (if any) can be merged into the main article and the section replaced for an excerpt of the lead section. Other uses are avoiding copy-paste of population tables, tournament scores, episode lists and other such resources.