"Why make your insecurities our problem?" reads a tweet from supplement brand Protein World, after complaints poured in over a controversial billboard. It's followed by a passive aggressive winking emoji and tweeted directly at a potential customer – breaking every rule in the social media playbook, right?

Lingerie ads are often populated by long-limbed women with unattainable figures. But Lonely is an underwear brand that celebrates women of all shapes and sizes, and it’s challenging the over-sexualised imagery in the industry while removing the male gaze from lingerie shopping.

People are willing to show support for social causes – provided they don't have to do much - and brands are finding new ways to tap into the strength of the herd. By re-engineering menial actions – from buying body lotion to having sex – there are ways to reward everyone.

Young Brits are politically minded. 70% think social media should be used for social change, and a quarter are highly knowledgable about politics. Yet only 12% would definitely vote in a general election. Why are they so disillusioned? And is engaging via social media the answer?