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A city wiki is a wiki used as a knowledge base and social network for a specific geographical locale. The term 'city wiki' or its foreign language equivalent (e.g. German 'Stadtwiki') is sometimes also used for wikis that cover not just a city, but a small town or an entire region. A city wiki contains information about specific instances of things, ideas, people and places. Much of this information might not be appropriate for Wikipedia (e.g., articles on every retail outlet in a town), but might be appropriate for a wiki with more localized content and viewers. A city wiki could also contain information about the following subjects, that may or may not be appropriate for a general knowledge wiki, such as:
- Details of public establishments such as public houses, bars, accommodation or social centers.
- Owner name, opening hours and statistics for a specific shop.
- Statistical information about a specific road in a city.
- Flavors of ice cream served at a local ice cream parlor.
- A biography of a local mayor and other persons
The Open Guide to London is probably the oldest of the city wikis. It is part of a sub group of city wikis that use the OpenGuides software, and most have the openguides.org domain in their URL. Most of them are for cities in England.
Largest city wikis
The table below, adapted from a more detailed table on the Omaha Wiki, provides information on the 30 largest city wikis worldwide, ranked by the number of articles as of March 31, 2009. Twenty-four of the city wikis use the Mediawiki software, five use the Sycamore software (Davis, Rochester, Santa Cruz, Chico, and Toronto), and one uses the OpenGuides software (London). Some of the methods for reporting metrics vary between the different types of wikis and thus care should be used when comparing across them. For example, the Sycamore stats do not break out counts for pages outside the main article namespace (e.g. user, project, image, template, help, category namespaces in Mediawiki) so the article counts between the Mediawiki and Sycamore wikis cannot be directly compared. For the Mediawiki sites, over half of the pages are in these supporting namespaces and are not included in the counts below. The user counts for most Sycamore wikis show only users with at least one edit while the user counts for the Mediawiki sites include users who have not made any edits. Given these differences, the numbers below tend to overstate article counts for Sycamore wikis and understate the number of users.
The columns below can be sorted by clicking on the symbol below the column heading. The "Total" columns show all activity since the wiki was founded. These metrics will be updated at the end of each month.
|Article Rank||Founded||City Wiki||Total Articles||Total Images||Total Edits||Total Users|
|19||2006-02-27||Santa Cruz, USA||3,135||1,603||16,497||98|
|20||2005-09-09||Ann Arbor, USA||2,982||404||20,539||672|
|32||2010-01-31||wiki durgapur, India||1,1||0||0,0,0|