In February of this year I was verbally (and by e-mail) contracted to write a business proposal for an individual (over Craigslist). On March 1st of this year I completed the work, submitted it to client and it was accepted. After many e-mails and phone calls made I have still never received payment. First, what recourse do I have as an individual to collect, and secondly can I post that he has not paid his debt on a web domain that I own?