A non-paying client blacklist: should I create it?

Would a client blacklist be a good product idea?

90% of clients pay on time and per the terms you agree upon.

But every so often, a client either refuses to pay, or doesn't want to pay the full amount, or delays payment.

Obviously, if you're a contractor who depends upon timely payments in full to make a living, this is incredibly frustrating...

I've accumulated a client blacklist over the years with the names and contact info of clients right here on the Warrior Forum (and beyond) who engage in this unprofessional behavior.

I thought it might be a good idea to create a small, searchable list that for-hire Warriors can quickly cross-reference before working with a given client.

Members would be able to submit client details (name, skype ID, email, etc) for non-paying clients.

They would have to provide definitive proof in the form of before/after conversations in order to put that client on the list and get the entry approved.

I may sell access to the list, or I may just make it free. I'd love to hear any pros/cons/suggestions on whether or not this is doable, and why or why not?

Thanks!