WikiMapia is an online map and satellite imaging resource that combines Google Maps with a wiki system, allowing users to add information (in the form of a note) to any location on Earth.
Created by Alexandre Koriakine and Evgeniy Saveliev, the project was launched on May 24, 2006 and is aiming towards “describing the whole planet Earth”. WikiMapia is unrelated to Wikipedia and the Wikimedia Foundation, but the website states that it was “inspired by Wikipedia.”
WikiMapia allows any contributor to add a “Hotspot” to any map by marking out a rectangle (with the maximum length of any one side being 20 kilometers) which is wiki-linked to a note providing information about the locality. The note may be in any of 64 languages currently supported, and may be modified by any contributor, as in a wiki. The link is activated by clicking within the rectangular “Hotspot”.