Use cases:

The Corruption Mapping community written their own stories about their work and learning:
 
Brasil:   De olho nas emendas: Ferramenta de transparência e participação popular 
Macedonia: Verification and Quality Control: Key Elements for Effective Anti-Corruption Crowdsourcing
Kenya:  Kuhonga's Anti-Corruption Strategy in Kenya
Kosovo:  http://blog.ushahidi.com/2013/01/07/i-paid-a-bribe-so-what-an-experience-from-kosovo/
Global:    What is Corruption Mapping (15th annual International Anti-Corruption Conference (November 2012))
Egypt:   Sinsai, Harassmap and Zabatak win Awards
Czech Republic:  Praguewatch
Kenya:   Ushahidi User Group meeting: Hatari
 

Corruption mappers: