That's TWO now. There are over 100 exchanges right now. PUBLIC exchanges.
http://bitcoincharts.com/markets/
ALL green at this point. No drops ANYWHERE!
(That's as of this posting. It will go red sometimes, but not often)
Printed copy · Anthology Volume 3, page 582Printed copy from The Tender For Law Anthology, Volume 3, page 582 (printed 13 June 2014). Added by this site; not part of the Facebook export.