How to Collect Rent from a Tenant that Vanished?

[John Kunick]

So, I've been fortunate over the years and have never had a tenant vanish.  But, this past week, I encountered my first.  Sad thing is there was no warning.  This tenant had paid like clock-work for over a year.  Then, he lost his job and got a month behind in rent.  He was communicating with me and then went radio silent.  Apparently, he moved out of state and did not leave a forwarding address.  So, any suggestions on potentially using a collection agency?  I would go to small claims court except, from what I understand, I have to have a forwarding address?  I would like to figure out a way to have this hit his credit report so other landlords don't have to encounter this with him in future.  Would appreciate any advice or ideas!