The Business of GhostbloggingSome of the best ghostbloggers come out of the shadows to talk about how they work, what they charge and who their clients are.

Every so often, after a long workday, Kinsey Schofield goes home feeling a little dazed and confused. "It's exhausting," she says. "I pretend to be seven different people, then I don't remember who I am."

Schofield, 24, is a business world ghostwriter--and the online voice of some high-profile names, including Nick Cannon, Robert T. Kiyosaki and Chris Moneymaker. She is part of a growing army of outside contractors who blog and tweet unseen in the name of ego and entrepreneurship. Writing as her clients, she posts on Facebook and MySpace, or tweets pithy thoughts straight from her iPhone.