IF YOU WORK IS STOLEN AND IS REPOSTED ON OTHER SITES:

#1 - Complain to Google Adsense's abuse department with a DMCA complaint form @ https://www.google.com/adsense/suppo...dmca_complaint . Why do this? You will be able to shut down abuser's Adsense account effectively killing his revenue stream.
#2 - Complain to Google search's abuse department with a DMCA letter/fax @ http://www.google.com/dmca.html . This is even better than complaining to AdSense, though a bit harder to do since only a fax / mail letter is accepted. But then the abuser gets a PENALTY in google search, either delisting his site or putting it in supplementary results.