Freelance Websites

I´ve been making some research in jobs and carrers and I came across two more websites that provide freelance services. This websites work as a third part between freelancers and contractors.
If you´re working as a freelancer in the programming area, maybe you can find new jobs in this two websites:

~ http://www.getafreelancer.com/
~ http://www.freelancecentral.net/

I think that working as a full time freelancer is a very challenging way of life. First, you have to find new tasks by yourself and compete with other freelancer´s bids. Then, you have the pressure of time to complete each task. Finally, each project has to be carefully done to build a reputation. Not an easy job but in the last couple years the freelance market online has grown exponentially.