Police; The Punishment Posting concept and threat to national ecurity

This year around Jan 2013 when people of सत्यमेवजयते reached us to share the ideas on policing issues of India, they were categorical to know about the concept of "Punishment Posting" in Police organizations.
As an answer to their request, I helped them to interview some of the people whom I presumed to have suffered on these punishment postings in their stint while working with the police but while facing camera they were not very forthright in describing their perceptions on this issue but still their answers made it conspicuous that it is all about ill gotten money of organized corruption that police working entails from victims and criminals.
The concept of punishment posting or side line posting is all  about the dry postings that have no scope of  additional income in the form of bribes, extortions, commissions etc.