Pop star using a digital startup that we haven’t heard of for promotional purposes? They must have a stake in the company. Such is the case with Justin Timberlake and Stipple: he’s an investor in the service, and is also using it to reveal the tracklisting for his upcoming ‘The 20/20 Experience’ album. Stipple sounds interesting though: a direct rival for Urturn (the company formerly known as Webdoc). The company says its technology “enables anyone to share an array of interactive content from a single post or image. From an image, Stipple dots expand to offer information, embedded videos, music, shop buttons, and more”. In Timberlake’s case, his new-album artwork links to iTunes and YouTube to buy/watch its lead single. Stipple isn’t just about music, though: in fact, it’s more about commerce in general for brands and retailers, having raised $3m of funding in December 2012.