More Than 10% of Mozilla Bug Finders Refuse Cash
angry tapir writes "The open-source Mozilla project has been offering cash bounties for security bugs for six years now, but often bug finders simply turn down the cash. Between 10 percent and 15 percent of the serious security bugs reported since Mozilla launched its bug bounty program have been provided free of charge, according to Mozilla."
If one were to find the bug in the course of one's job, the employer may not allow you to accept a cash bounty. This is certainly the case in the US Federal Government, as well as many Federal Contractors.
Source And, California registration by the Mozilla Foundation as a charitable trust.