Pro bono, or pro bono publico, means for the public good in Latin. It is used mostly when professional service is rendered on a voluntary basis.
Why I do some work pro bono (and don't want to be paid for it)
Pro Bono Oregon Lawyer Michael Fuller – Attorney for the Underdog
Why Pro Bono Matters City Bar Justice Center
Pro Bono Graduation Requirement An On-line Orientation. - ppt download
Free Does Not Mean Pro Bono
Pro Bono Requirement
Pro-Bono' lawyer clarifies he just meant that he is a big fan of U2
A Legal View of U2 - Pro Bono or No Bono? - - Andrew McClurg's Legal Humor
The Definition of Pro Bono in Law
What's the difference between pro bono and a contingency fee basis?
Pro Bono Bilzin Sumberg
What Is Pro Bono? Global Pro Bono Network