Sssh, Bec, you're giving the game away!

The 1 in 3 figure most likely comes from several Nielsen Netratings surveys, I think the earliest one was done in 2003, there's been another one in 2007 - although I'm guessing on that last date.

I'm hoping that 1 in 3 of Oprah's audience becomes interested in porn, although judging by the forums there's plenty of religious types who are outraged that Oprah did this show.