Update October 3, 2016: Digital Homicide's founder James Romine's lawsuits against Steam users have been cancelled, forcing him to close down the studio, citing Valve's removal of their games as reason for both the closure and the lawsuit folding.
It all started when Digital Homicide filed to sue 100 Steam users, prompting Valve to pull their games from sale on the platform. This move, it seems, has seen Digital Homicide die. The case against the Steam users has been pulled, as Digital Homicide - no longer bankrolled by their games on Steam - ran out of funds.
We had a look at the shady world of paid-for reviews a few months back.
In an interview with TechRaptor, Romine claims some of the Steam harassers were competitors.