As tech/internet professionals, we often forget the echo chamber we live in . . . we all read the same publications and participate in the same communities. Awareness/publication outside those communities is negligible. As an example, take a look at the blackoutsopa campaign on Twitter . . . 10,000 people (I'm one of them, by the way) out of 180 million on Twitter?? . . . the most recent claim I saw is that those 10,000 people have 20 million followers . . . in aggregate, sure . . . wouldn't be surprised if it was a net of only 1 million . . . if that.
That said, it's impressive that the anti-SOPA/PIPA campaign has had an outsized impact for its population, but there is a LONG way to go before the rest of the internet has even the slightest hint anything is even going on . . . and I do think FB/Google/Wiki/Tumblr blackouts would be needed to get there.