Collaboration – especially with a rival – might seem an alien concept to many marketers but it has been a key approach in the extraordinary rise of YouTube celebrities. Stars such as Zoella and her ...

Retailers such as John Lewis, M&S and Sainsbury’s are launching high-profile Christmas campaigns on the site, while brands such as PepsiCo, Evian and Volvo Trucks are seeing huge engagement with their ...

Asda customers will soon be able to buy products through the supermarket's YouTube channel, as the brand experiments with "shoppable" videos and online ads. The supermarket is currently running trials ...