At a local Linux User Group $($LUG$)$ meeting, some people who are unfamiliar with Linux ask you to explain what the GPL is and how it relates to OSS. These people also don't understand how OSS generates profit and are under the impression that the quality of OSS is poor compared to commercial software. They suggest that the potential for OSS in the future might be limited$.$ How do you reply? Include examples to demonstrate your points. To which Web sites can you direct them for further information?