The best freelance clients I have worked with have been from personal recommendations. Tell every friend who works in software that you are free for work - many

The best freelance clients I have worked with have been from personal recommendations. Tell every friend who works in software that you are free for work - many of them will be approached by people looking for developers, and can refer you. Also, look for technology-specific mailing lists, forums and job boards (and stackoverflow careers). The people looking for developers there tend to be more familiar with the process, cost and expectations of hiring a developer than people on "outsourcing sites".