While I don't have experience as a professional writer, I am starting my own business. I've recently learned that Delaware does not charge state income tax for out of state income with LLCs and as such skips the 15% unemployment tax. All you need is a mailing address in Delaware (which is easy to obtain), about $500 to set up the LLC initially, and $250 a year to maintain the LLC after that. Best part: it's totally legal. Of course all this assumes you don't live in Delaware. There are a lot of details to doing this and I'm still learning myself (US tax code is as deep and mysterious as the Pacific), but shoot me a PM if you want to chat about options; I was actually going to PM you anyway about a job Pheelyks.

EDIT: out of state income tax exemption also applies to Corporations. An LLC probably makes more sense for you though.