In addition to seemingly endless supply of freelance writers, there are also crowdsourcing websites that make the process a little more streamlined and smooth. The List.ly list below features several of the more prominent sites.
...Crowdsourcing content moves beyond simple creation or curation and opens a world of opportunities for freelance writers as well as business owners....
if contact is king, crowdsourced content must be, I don't know, Emperor of the universe? ;-) Useful tips.