Wieden + Kennedy Amsterdam describes its latest online venture for Coke, Sitelets, as 'little islands in the internet where fun, unexpected things take place'.

Last week, the Coca-cola Facebook timeline went live and to celebrate, it posted two riddles. Those who guessed the clues correctly were led to http://abeachbonfire.com, where you can experience sights and sounds of a virtual California beach bonfire, with crackling of flames, breaking waves, guitar and the gentle clink of Coke bottles; or to http://blowingbubblesinthesky.com/, a blue-sky filled screen with fluffy clouds and birdsong, where you can blow bubbles using your computer's microphone. The two Sitelets are the first in a series; another riddle is now live on the Facebook page. Digital production is by Random, Amsterdam.