Feedback, is a well made film, that's filled with mystery, instensity, violence and a claustrophobic atmosphere, since everything is set in a radio station. The flow is good and kidna predictable, just like the way it should be. Calm at first, aggressive and unknown, later. Everything would have been perfect in this movie, but the ending ruined everything. Despite the quite enough twists, during the film, the ending wasn't something to be surprised with.
The creators/writers/director, probably wanted to play safe, because Feedback, was pretty close, to be an amazing non political/revenge movie, and most likely, "afraid" to, due to the "political correct" frenzyness. Also it's really tiring and boring, in another movie, to make references about politics and ideologies. The words "Nazi" and "Fascists" have their "honour" again, and it's totally irrelevant to the plot, especially when the "antinazi" characters, are being accused for unforgivable and horrible things.
Despite that, there's a very good allusion about how much influence, publicity, power and money, can have on the masses, that are so careless for their beloving and "untouchable" celebrities's actions, where these actions, are being applauded in the end.
Overall, Feedback is a good movie, and i recommend it, despite it's flaws.