I've had a couple of occasions where someone offered to pay me for completing their project or simply fix one bit. Though I like money and who, I mean besides Bill Gates, couldn't use a little more, I'm not here to take on extra side projects. I also don't want SO to become a freelance recruiting site. It's supposed to be about programmers helping programmers in community.
How do you respond if someone offers you money and you don't want to take on the project? Under what conditions would you be willing to take on a project from a user at SO? How would you respond in that case? Is there a need for a projects site, similar to careers, where people with project needs could go to hire freelancers?