Only 0.6% of online shopping is driven by social media, compared to e-mail, which drives 27%. Can Facebook’s Buy button, integrated into newsfeeds, encourage people to spend more when they're on social media? And are retailers really welcome on such a personal platform?

As young people flock to WhatsApp, LINE and other chat apps, Facebook struggles to stay relevant. In response, it's created better emoticons – called Stickers – that are part of a deeper shift towards pictures as a primary way to communicate.

As e-commerce expands, brands are rethinking their business models to cater to shifting consumer habits. Cartwheel is a collaboration between US retail titan Target and Facebook that bridges the gap between real-world shopping and social media.

A Heineken advert in Brazil is celebrating its fans on Facebook by blowing up a balloon for every 'like' it receives on its page. The employee in the advert says that if Heineken receives 10,000 likes he will blow up 10,000 balloons.