Via SFSignal, I see that Unintentional Irony is asking "Does Science Fiction (Still) Matter?" The gist of the piece is the proposition that SF mattered at one time, when the country's efforts were focused on nuclear technology and the space race, but that now such things don't hold the popular imagination, which has retreated to blogging and World of Warcraft. And so, "To my eye, it doesn't really look like SF is currently the place where someone with something to say goes to say it (I suspect that blogging now occupies that ground), nor is it the place where people go to read what such people have to say."
To which I have to say, the fallacy is in limiting SF to stories about space exploration. Despite it's fourth season dip, Battlestar Galactica is an extremely well-presented and popular science fiction series, taken seriously as quality drama by the mainstream media (TV Guide, Entertainment Weekly, Rolling Stone, elsewhere), and they engaged the current Iraq war head on just a few seasons ago with their New Caprica storyline, which dared more than pretty much any other show on television by casting the heroes as the terrorists. Then there's Cory Doctorow's Little Brother,which takes on the incursion into our civil rights and liberties taking place right now - certainly Cory is "someone with something to say" choosing to say his piece in SF, and as for this being "the place where people go to read what such people have to say" - well, Little Brother has been several weeks on the New York Times bestseller list. And don't even get me started on the increasing numbers of "mainstream" authors - like Michael Chabon, Philip Roth, Cormac McCarthy - who are choosing to go to SF as the place to say what they have to say.