Outsourcing
One might hire a freelance writer from Elance.com for content. The more you pay the better the quality. But you really don’t want some guy writing about YOUR product?
Private Label Rights
On PLRPro.com you can buy content, edit it and claim authorship. However others will buy the same content and do what you do. That’s uber bad!
Article Directories
Free article directories are a definite no-no. “Duplicate content penalties by Google” is all I can say. That’s uber uber bad for your SEO.