Does anyone know the author's source is for determining various marketplaces' monthly active users? I doubt that Facebook has exceeded Craigslist in overall ma

Does anyone know the author's source is for determining various marketplaces' monthly active users? I doubt that Facebook has exceeded Craigslist in overall marketplace activity in the US. Perhaps it's exceeded Craigslist on a world-wise basis but that's because Craigslist's user base is primarily North American-based.