The impressive Sonos logo which went viral early in 2015 proves that intelligent branding can still make an impact and produce designs that people wish to share. The designers insist that it was by happy accident that they discovered that their logo design radiated the optical illusion of soundwaves from its centre when scrolled up and down. Since Sonos is the producer of wireless speakers, it was entirely appropriate that their logo radiates like the sound amplification products that they sell.