"Any show that isn’t a soap opera “about relationships” gets put in one of those “weird” places where people who are less interested in crying and hugging go for a story -- cable and satellite channels, or slotted in just before midnight and just after some programme about cocks, or(aha!) on iPlayer. Which is where Paul Cornell’s rather good medical-horror Pulse gets to live or die. Since it was onBBC3, a channel only eight people in the UK can receive; the viewership it needs to get a full-series pick-up has to come from iPlayer. That’s where the audience is – and it’s where television is going to be."
(from his Wired column)