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Just in time for the summer tourism season:
Wikipedia announced a new feature this week: Wikipedia Nearby
The feature will work on mobile devices, as well as the standard browser version of Wikipedia. The device will look for geotagged articles, and present them in a list format based on distance. It also prioritizes articles that are missing media, with a goal of encouraging photos and media uploads from mobile users.
There seems to be a nice balance in making the product better for the user, and encouraging the user to make the product better.
From the web:
Go on a Wikipedia scavenger hunt with Wikipedia Nearby — Wikimedia blog.