Are our computers spying on us?

Bloomberg has reported that secret "spy chips" have been detected on Chinese made server motherboards. Naturally the affected server manufacturer have issued denials that you can accept or think "Of course they would say that" as you like.

 Remember a few years back when the Americans were frothing at the mouth about Chinese routers? I was cynically thinking that it was because they wanted American tapping of the backbone, or even kill switches when the revelations about PRISM & other massive American spying on the Internet came out and it was even worse than I imagined.