Networking certainly is high up there. That's coupled with having clients who love you and want to refer you. Plus if you're international, it helps SEO-ing wel

Networking certainly is high up there. That's coupled with having clients who love you and want to refer you. Plus if you're international, it helps SEO-ing well because I've certainly found myself searching "freelance ruby on rails developer" or "freelance ruby on rails develeper [city/country]" and found great leads instead of combing something like ODesk or Elance.