I just posted 2 projects on elance.com - my first experience on that site.
I needed very specific flash work and a document translated into 7 languages... otherwise I'd have posted on the job board here.
I got low and high bids... I emailed the lowest bidder a few times, and read his elance reviews, and I'm paying about 1/10 of what I had expected to pay for this project!
Will let you know how the final project turns out!
It's simple to use- like ebay- once you get the hang of it; I don't know why I've never used it before!