This is somewhat tangential, but I would bet the set of all people who stood in line for an iPhone and who refuse to use facebook is vanishingly small.
http://www.istrategylabs.com/2009/01/2009-facebook-demograph...
40% of facebook users are 18--24.
now compare to people with iphones in 2009 (different to people who queued, admittedly, got stats on this? but still earlyish adopters since 2009 data)
http://gorumors.com/crunchies/age-demographics-of-iphone-use...
whilst for the iphone, very few are in the 18--24 range: just 13%. most people are 35-54.
it seems from this 2009 users of the iphone tend to be older than users of facebook. perhaps because the iphone is an expensive device.