1. Posting your writing job websites like Craigslist, onlinewritingjobs, etc.
2. You may use job websites like monster, careerbuilder, etc. to post your writing job.
3. There are various bidding websites like Scriptlance, Getafreelancer, Rentacoder. You may post your job in these websites.
4. Search in Google, MSN, Yahoo or any search engines for blogs. Many writers will have a blog of their own. You can get in touch with a ghostwriter from his/her blog.
Hurray...you have now finally found a ghostwriter. How to hire a ghostwriter is the next question that you would crop up in your mind.
1. Ask the writers who have applied for the writing job to send in their writing samples.
2. Analyze whether the writing style fits your requirements.
3. Speak to the ghostwriter about your requirements.
4. Come to an understanding on the payment terms. Check for the mode of payment your ghostwriters uses to receive payments. If both of you uses the same mode of payment, well and good; if not, workout a suitable payment mode.
5. Make it very clear that the copyright to the content is transferred to you after payment even though ghostwriters know this fact.
6. Work out a time for completing the project.
You may continue to work with the same ghostwriter for your future projects if you really like his/her work.