I will be filing a collection today with Dunn & Bradstreet - it will cost me some $20 odd dollars, but it will place my collection account on the business credit report of the company.  Ouch.  Isn't THIS the most logical avenue?  I've long thought so, but until now did not have reason to use it.  The offending client has had amble warning, and I've no doubt they assumed that my demand for payment and my disclosing the imminent D&B hit was nothing more than another idle threat.

It'll be an easy $20 bucks to spend.