As a librarian, one of my interests is to make information easily accessible and therefore I sometimes extend references in existing wikipedia article. The usage of the citation templates for books and articles embeds COinS in the associated bibliographic entry. This enables browser extensions like Zotero or the OpenURL Referrer to re-use the reference information, e.g. for downloading the citation to a reference management tool.
More information:
Citation/Reference Formatting
Wikipedia
Vandalism
Scientists