I thought this might offer sort of a market survey for many entrepreneurs designing a startup. But I didn't bother reading beyond this abstract [there's link to a <i>full report</i> in html or pdf]... once I read that this March 25, 2009 report used data from a survey that was completed in December <i>2007</i> !<p>Seriously: That sort of lag between data collection and analytical report cripples its value to all but historians. I find that Pew often address important issues. But "timing is everything".