First of all, you are a little star here due to your fiction. People follow your submissions directly, mostly people who already agree with you or like your fiction.
Um, what? Setting aside the cutesy pseudocompliment "little star", I started Luminosity last summer. I was already third on the top contributors list before that, if I recall correctly, and the fiction I was doing before Luminosity was and remains obscure and unpopular, received and continues to receive approximately no attention on LW, etc.
I just watched Transcendent Man about the singularity and Ray Kurzweil in particular. It's well-made, full-length, and includes the most popular criticisms of Kurzweil: that his prediction timeframes are driven by his own hope for immortality, that the timescale of his other predictions are too optimistic, that his predictions about the social outcomes of revolutionary technology are naively optimistic, and so on. Ben Goertzel and others get much face time.
You can rent or buy it on iTunes.