I've considered outsourcing part of development before. But always gave up after thinking how hard would be to find someone who is actually good. And to be honest, after reading that the author had to first hire two girls just to look for a developer. It doesn't really gets me any more excited. Just thinking about all the useful developing time that I'd wasting looking for a good developer. It just doesn't seem worth…
Your main advantage will be to take the requirement and break it down into its lowest parts and then hand off those parts to an outsourced developer and if he/she does not deliver exactly to your spec, then end the relationship. Period.
There is a certain amount of luck to it, but just as the author suggests, I recommend first having the developer create a very simple application with requirements that you define and estimate how long it would have taken you (probably no more than a 5 hour task) and if he/she can deliver, then you've got yourself a winner and you can focus on the business and not javascript errors.