It can be, but like Paul Graham says it all depends on your ability of identifying a good programmer. I made the mistake of not interviewing the candidates well enough and wasted a month's worth of time and labor because of it. Most people on the site, from my experience, are 3rd world country programmers with the equivalent of a degree from Devry.

My advice is just to learn the language and do it yourself. You will probably have to modify the site in the long run anyway.