Dalston partygoer Jenny Baker has raised more than £10,000 for a local homeless man to return to Jamaica in just one week, after meeting him on a night out and launching Twitter campaign and Go Fund Me page '#getmichaelhome'.

Worth £777 million in 2013, outdoor ads aren't just about catching the eye and promoting a brand - they need to be engaging, fun, or useful. Slovakian architectural design firm Design Develop wants to make a difference by turning billboards into living spaces for homeless people.

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.

According to Feedie, 65% of Americans eat out once a week, and millions of those people post pictures of their meals to social media. Instagram alone houses more than 20 million pictures tagged #foodporn. But what if posting these pictures could help those less fortunate?