According to a report published by the UK-based website The Guardian, a new Firefox add-on, dubbed Dark Side Of The Prism, automatically plays tracks from the seminal 1973 PINK FLOYD album Dark Side Of The Moon whenever a user visits sites, such as Google or Facebook, embroiled in the scandal over the National Security Agency's (NSA) snooping programme.

For example, users visiting Guardiannews.com would not hear any beguiling psychedelic rock. But those surfing Bing, Google, Facebook or Yahoo would be served up a healthy dose of Floyd noise.

The idea – according to its creator, 28-year-old developer and artist Justin Blinder – was to "create some sort of ambient notification that you are on a site that is being surveiled by the NSA."

About 50 people have downloaded the add-on in the few days since it was released, he says. It only took four hours to build from his makeshift office in New York.

"I was really interested in the fact that, although the Prism leaks were a shock to many of us, we pretty much already kind of know we're being surveiled a lot of the time and giving away so much data," he says.

Why did he choose Pink Floyd for the backing track? "I just Googled 'Prism' and the Dark Side of the Moon cover came up," he says, and because the music is unintrusive. "I didnt want it to be too jarring because a lot of us seem to be giving in to being surveiled on a daily basis. I feel like people already know that. I didn't want it to be alarming."

As previously reported, according to Rocksquare.com, Spotify has added another illustrious brick to its wall of sound: Pink Floyd's entire studio discography is now available on the popular streaming service. Although Floyd’s music has been available on Rhapsody and Rdio for some time now, Spotify is the first such service to host the whole catalog.

Pink Floyd had resisted Spotify’s pull for years, previously insisting that the songs not be made available on Spotify’s ad-supported free version.

The band announced their change of heart last week via Twitter, where it was promised that their entire catalog would be “unlocked” on Spotify once 'Wish You Were Here' was streamed one million times by fans. Needless to say, the band’s fans were able to pull off the feat, and Floyd is now free.