Geo-Wiki is a platform for engaging citizens and experts in both environmental and socioeconomic monitoring, established in 2009 at the International Institute for Applied Systems Analysis (IIASA).

Other methods for crowd-sourced data collection in Geo-Wiki include campaigns and games, used as incentives to motivate citizens.

Internet tools such as Google Earth offer enormous potential for land cover validation.

This should reduce uncertainty and improve predictions in land use, vegetation, climate change, and earth systems modeling.

[11] The Geo-Wiki ecosystem comprises a number of applications, some of which use gamification mechanisms to attract and motivate citizen scientists and experts to participate in campaigns and make valuable contributions to science.