Craigslist to charge fees for brokered rental listings in San Francisco?

For one of my clients I regularly deal with posting for sale and for rent listings on craigslist to test out formatting issues. Today, after I submitted one post, I got the standard post confirmation along with:

Paid to craigslist 2007-09-27 -- paymentID

real estate for sale Total to be charged 0.00

Is craigslist setting up the infrastructure to charge fees for brokered real estate listings like they have in New York? That would be interesting.

Update 9/29 - I've also gotten this response from posting rental listings.