Drawing from an early-adopter survey conducted through Gartner, Harvard College student Derek Slater and Mike McGuire, Gartner research director, found that consumer-to-consumer recommendation tools, like playlists, enable consumers to actively present their individual tastes to each other and are becoming increasingly common. According to survey results, nearly 20 percent of online music listeners reported listening to music via playlists at least five days a week.

‘Armored’ bubbles can exist in stable nonspherical shapes