The only thing more secret than number of Chairman Pref's is whether Metrojet makes money (I doubt it). When the category was started there were about 2000. Once folks knew it was available, that rose to over 4000. Given segment qualification, and increased transatlantic capacity (a couple of those at full fare will do it nicely), I bet dg1's 10,000 estimate is pretty good. I see a lot bag tags, and almost always get an overflow res agent when I call, all of which conspires to convince me "we are not alone out there."