I'm reading a Month with a Mac and the "Apple has 2% of the market" pseudo-fact has come up again. Folks sure like to toss this around. Does this have any basis in fact? I've heard it for years and years and years no matter if Apple is doing well or not, so I doubt it. Or is it that even if Apple doubles its sales they're so small compared to Windows that it doesn't even make a dent? Can this sort of thing even be accurately measured? If so, who does the measuring? Are they just looking at what gets sold? Browser stats (in which case it does appear that it is true)? What if it was broken down by communities (thinking of the rapidly growing number of Apple laptops at OSCON)? What if you removed people who have no choice in what they use (ie. work machines)? What if you removed machines that predate Apple's most recent resurgance? Inquiring minds want to know!