Obviously, the guys with skills are at WIRED / TechCrunch / etc..., but there must be some solid talent out there that isn't locked away full-time at a big media house. What's a good way to find and potentially hire these guys part time?
Odesk/Elance is good.. As a web content writer myself, I usually get found by clients as they invite me to apply to their job (usually related to, for instance, my forte: health/nursing/psychology/internet marketing, etc.). From there, the client selects the best bidder (from the proposed rate, experience, and even some specific tests to determine if we are really a good fit). Hope this helps!